05. Modify Average

function average(num) {
    num = String(num);
    let numbers = [];
    for (let i = 0; i < num.length; i++) {
        let number = Number(num[i]);
        numbers.push(number);
    }

    let avg=function() {
        return numbers.reduce(function (a, b) {
                return a + b;
            }) / numbers.length;
    };

    let average=avg(numbers);

    while (average <= 5) {
        numbers.push(9);
        average=avg(numbers);
    }

    console.log(numbers.join(''));
}
average(101);