Change Bureau

function changeBureau(input) {
    let bitcoins = Number(input[0]);
    let chY = Number(input[1]);
    let commission = Number(input[2]);

    let bitcoinsInEuro = bitcoins * 1168 / 1.95;
    let chYInEuro = (chY * 0.15 ) * 1.76 / 1.95;

    let sum = bitcoinsInEuro + chYInEuro;
    let totalSum = sum - sum * commission / 100;

    console.log(`${totalSum.toFixed(2)}`);
}