05-divisionBy3

function dividedByThree(num) {
    var sumOfDigits = 0;
    while (num > 0) {
        sumOfDigits += num % 10;
        num = Math.floor(num / 10);
    }
    if (sumOfDigits % 3 == 0) {
        console.log("the number is divided by 3 without remainder");
    } else {
        console.log("the number is not divided by 3 without remainder");
    }
}
dividedByThree(12);
dividedByThree(189);
dividedByThree(591);
dividedByThree(13);