Subtraction JS Advanced

function subtract() {
    let firstNumberElement = document.getElementById('firstNumber');
    let secondNumberElement = document.getElementById('secondNumber');

    let firstNumber = Number(firstNumberElement.value);
    let secondNumber = Number(secondNumberElement.value);
    let subtraction = firstNumber - secondNumber;

    let result = document.getElementById('result');
    result.textContent = subtraction;
}