How to add using currency converter a new currency and show the price from the the BTC that is already showing in html

function multiply2() {
var num5 = document.getElementById(“firstNum1”).value;
document.getElementById(“secondNum1”).value = 13630344.17961704;
var num6 = document.getElementById(“secondNum1”).value;
var result3 = num5 * num6;
document.getElementById(“result3”).value = result3.toLocaleString(‘en-US’, {
maximumFractionDigits: 8
});
document.getElementById(“result3”).style.color = “red”;
document.getElementById(“result3”).style.fontWeight = “900”;
}

function multiply4() {
var num7 = document.getElementById(“result3″).value.replace(/,/g, ”); //remove any commas
var num8 = document.getElementById(“gcw_valFnAj0a2vV1”).value;
var result4 = num7 * num8;
document.getElementById(“result4”).value = result4.toLocaleString(‘en-US’, {
maximumFractionDigits: 8
});
document.getElementById(“result4”).style.color = “red”;
document.getElementById(“result4”).style.fontWeight = “900”;
}

$(document).ready(function() {
$(‘#datatable’).DataTable({
“paging”: false,
“searching”: false,
});
});

$(document).ready(function() {
var baseUSD = ‘<?=$baseUSD?>’;
var coin_rate_in_ZAR = ‘<?=$coin_rate_in_ZAR?>’;
var coin_rate_in_USD = ‘<?=$coin_rate_in_USD?>’;

$(‘#gcw_valFpWbgYyUL0’).val(baseUSD);
$(‘#gcw_valFpWbgYyUL1’).val(coin_rate_in_ZAR);

// When USD value changes
$(‘#gcw_valFpWbgYyUL0’).on(‘keyup’, function() {
var baseUSD = $(‘#gcw_valFpWbgYyUL0’).val();
var valueInZar = baseUSD * coin_rate_in_ZAR;

// alert(valueInZar);
$(‘#gcw_valFpWbgYyUL1’).val(valueInZar);

});

// When ZAR value changes
$(‘#gcw_valFpWbgYyUL1’).on(‘keyup’, function() {
var baseZAR = $(‘#gcw_valFpWbgYyUL1’).val();
var valueInUSD = (baseZAR * coin_rate_in_USD).toFixed(4);

// alert(valueInUSD);
$(‘#gcw_valFpWbgYyUL0′).val(valueInUSD);

});

});
<div class=’col-2 p-5 me-5′>
<div class=’uit d-flex justify-content-end mb-3′>BTC</div>
<div class=’uit d-flex justify-content-end mb-3′>1 USD</div>
<div id=’show_price_binance_btc’><span>…</span></div>
<div id=”gcw_valFpWbgYyUL0″>…</span></div>
</div>

<div class=’col-2 p-5 me-5′>
<td><input type=”number1″ id=”firstNum1″ name=”firstNum1″></td>
<td><label for=”secondNum1″>140,000.000111</label></b></td>
<input style=”visibility:hidden” type=”number1″ id=”secondNum1″ name=”secondNum1″></td>
<td><button type=”button” onclick=”multiply2()”>Multiply</button></td>
<td><input type=”text” id=”result3″ name=”result3″/></td>
<input style=”visibility:collapse” type=”usdzar1″ id=”usd1″ name=”usd1″>
<label for=”zar1″></label>
<input style=”visibility:collapse” type=”usdzar1″ id=”gcw_valFnAj0a2vV1″ name=”zar1″>
<td><button type=”button” onclick=”multiply4()”>Multiply</button></td>
<td><input type=”text” id=”result4″ name=”result4″/></td>
</div>