ファイヤベースに送ったデータを加算したいです

Question

javascriptでファイヤストレージに預けている数字を１回目のgoukei_1と２回目goukei_1、３回目、４回目と加算してグラフに表示したいのですがどうすれば良いでしょうか？？

   
<table id="output" frame="vsides" border="1" >
<th>日付</th>
<td>名前</td>
<td>物件名</td>
<td>仲介手数料</td>
<td>A D</td>
<td id="sum1"> 合 計 </td>
</table>
<table id="output_2" frame="vsides" border="1" >
  <th>日付</th>
  <td>名前</td>
  <td>物件名</td>
  <td>仲介手数料</td>
  <td>A D</td>
  <td> 合 計 </td>
  </table>

//userのoptionタグを配列に組み替え
    var values = [];
    var options = $('#uname option');
    $.each(options, function (i, opt) {
        values[i] = opt.value;
    });

                // 振り分け変数確認用
const user_name ="user1"
const user_name_2 ="user2"
const user_name_3 ="user3"
const user_name_4 ="user4"
const user_name_5 ="user5"
console.log(values[0]);

    //送信イベント
$("#send").on("click", function(){
  if(user_name == values[0]){
    const date_1 = $("#date").val();
    const uname_1 = $("#uname").val();
    const fee_1 = $("#fee").val();
    const property_1 = $("#property").val();
    const ad_1 = $("#ad").val();
    const goukei_1 = $("#goukei").val();
    

    const msg = {
        date_1: date_1,
        uname_1: uname_1,
        fee_1: fee_1,
        property_1: property_1,
        ad_1: ad_1,
        goukei_1: goukei_1    
    };
    ref.push(msg);
  }
  if(user_name_2 == values[1]){
    const date_2 = $("#date").val();
    const uname_2 = $("#uname").val();
    const fee_2 = $("#fee").val();
    const property_2 = $("#property").val();
    const ad_2 = $("#ad").val();
    const goukei_2 = $("#goukei").val();
    const msg_2 = {
        date_2: date_2,
        uname_2: uname_2,
        fee_2: fee_2,
        property_2: property_2,
        ad_2: ad_2,
        goukei_2: goukei_2
         };
    ref.push(msg_2);
  }
  if(user_name_3 == values[2]){
    const date_3 = $("#date").val();
    const uname_3 = $("#uname").val();
    const fee_3 = $("#fee").val();
    const property_3 = $("#property").val();
    const ad_3 = $("#ad").val();
    const goukei_3 = $("#goukei").val();
    

    const msg_3 = {
        date_3: date_3,
        uname_3: uname_3,
        fee_3: fee_3,
        property_3: property_3,
        ad_3: ad_3,
        goukei_3: goukei_3  
    };
    ref.push(msg_3);
  }
  if(user_name_4 == values[3]){
    const date_4 = $("#date").val();
    const uname_4 = $("#uname").val();
    const fee_4 = $("#fee").val();
    const property_4 = $("#property").val();
    const ad_4 = $("#ad").val();
    const goukei_4 = $("#goukei").val();
    

    const msg_4 = {
        date_4: date_4,
        uname_4: uname_4,
        fee_4: fee_4,
        property_4: property_4,
        ad_4: ad_4,
        goukei_4: goukei_4
        
        
    };
    ref.push(msg_4);
  }
  if(user_name_5 == values[4]){
    const date_5 = $("#date").val();
    const uname_5 = $("#uname").val();
    const fee_5 = $("#fee").val();
    const property_5 = $("#property").val();
    const ad_5 = $("#ad").val();
    const goukei_5 = $("#goukei").val();
    

    const msg_5 = {
        date_5: date_5,
        uname_5: uname_5,
        fee_5: fee_5,
        property_5: property_5,
        ad_5: ad_5,
        goukei_5: goukei_5
        
        
    };
    ref.push(msg_5);
  }    
});
//受信イベント
ref.on("child_added",function(data){
    const v = data.val();
    const k = data.key;
    if(v.uname_1==values[0]){
    const h = '<tr><th>'+v.date_1+'</th><td>'+v.uname_1+'</td><td>'+v.property_1+'</td><td>'+v.fee_1+'</td><td>'+v.ad_1+'</td><td>'+v.goukei_1+'</td></tr>';
    $("#output").append(h);}
    if(v.uname_2==user_name_2){
    const a ='<tr><th>'+v.date_2+'</th><td>'+v.uname_2+'</td><td>'+v.property_2+'</td><td>'+v.fee_2+'</td><td>'+v.ad_2+'</td><td>'+v.goukei_2+'</td></tr>';
    $("#output_2").append(a);}
    if(v.uname_3==user_name_3){
    const b ='<tr><th>'+v.date_3+'</th><td>'+v.uname_3+'</td><td>'+v.property_3+'</td><td>'+v.fee_3+'</td><td>'+v.ad_3+'</td><td>'+v.goukei_3+'</td></tr>';
    $("#output_3").append(b);}
    if(v.uname_4==user_name_4){
    const c ='<tr><th>'+v.date_4+'</th><td>'+v.uname_4+'</td><td>'+v.property_4+'</td><td>'+v.fee_4+'</td><td>'+v.ad_4+'</td><td>'+v.goukei_4+'</td></tr>';
    $("#output_4").append(c);}
    if(v.uname_5==user_name_5){
    const d ='<tr><th>'+v.date_5+'</th><td>'+v.uname_5+'</td><td>'+v.property_5+'</td><td>'+v.fee_5+'</td><td>'+v.ad_5+'</td><td>'+v.goukei_5+'</td></tr>';
    $("#output_5").append(d);}
});




//削除イベント
$("#dele").on("click",function(){
  ref.remove();
});

//加算式？？


//グラフ

ref.on("child_added",function(e){

const v = e.val();
const k = e.key;
let goukei = Number(v.goukei_1);

console.log(goukei);

var data = [
{ label: "user1", y: goukei },
{ label: "user2", y: 59 },
{ label: "user3", y: 80 },
{ label: "user4", y: 81 },
{ label: "user5", y: 56 }
];
console.log(data)

var stage = document.getElementById('stage');
var chart = new CanvasJS.Chart(stage, {
title: {
text: "売上"  //グラフタイトル
},
theme: "theme4",  //テーマ設定
data: [{
type: 'column',  //グラフの種類
dataPoints: data  //表示するデータ
}]
});
chart.render();
});

</script>

長くなってしまってすみません。。