Moving

function moving(input) {
    let width = Number(input[0]);
    let length = Number(input[1]);
    let height = Number(input[2]);

    let freeSpace = width * length * height;

    let index = 3;
    let command = input[index];

    while (command !== 'Done') {

        let numberOfBoxes = Number(command);
        freeSpace -= numberOfBoxes;

        if (freeSpace < 0) {
            console.log(`No more free space! You need ${Math.abs(freeSpace)} Cubic meters more.`);
            break;
        }
        index++;
        command = input[index];
    }

    if (freeSpace >= 0) {
        console.log(`${freeSpace} Cubic meters left.`);
    }
}

moving(["10", "10", "2", "20", "20", "20", "20", "122"])