computerFirm

function computerFirm(input) {

    let computers = Number(input.shift());
    let saleRating = Number(input.shift());
    let counter = 0;
    let sum = 0;
    let sumRating = 0;
    let possibleSales = 0;
    let rating = 0;

    while (counter < computers) {
        counter++;
        possibleSales = Math.floor(saleRating / 10);
        rating = saleRating % 10;
        sumRating += rating;
        switch (rating) {
            case 2: sum += possibleSales - possibleSales; break;
            case 3: sum += possibleSales * 0.5; break;
            case 4: sum += possibleSales * 0.7; break;
            case 5: sum += possibleSales * 0.85; break;
            case 6: sum += possibleSales * 1; break;
        }
        saleRating = Number(input.shift());
    }

    let avgRate = sumRating / counter;
    console.log(sum.toFixed(2));
    console.log(avgRate.toFixed(2));

}