JSFiddle - React, Tailwind, and code Playground

HTML

<span id="result">0</span>

JavaScript

function getElementByIdCompatible (the_id) {
    if (typeof the_id != 'string') {
    return the_id;
    }
    
    if (typeof document.getElementById != 'undefined') {
    return document.getElementById(the_id);
    } else if (typeof document.all != 'undefined') {
    return document.all[the_id];
    } else if (typeof document.layers != 'undefined') {
    return document.layers[the_id];
    } else {
    return null;
    }
}

var sum1 = 220
var totalsum = sum1 * 4.6;  // = 1012

var obj = getElementByIdCompatible('result');

obj.innerText = totalsum;