sumAndProduct

function sumAndProduct([n]) {
    n = Number(n);

    for (let a = 1; a <= 9; a++) {
        for (let b = 9; b >= a; b--) {
            for (let c = 0; c <= 9; c++) {
                for (let d = 9; d >= c; d--) {
                    if ((a + b + c + d) == (a * b * c * d) && n % 10 == 5) {
                        console.log(`${a}${b}${c}${d}`);
                        return;
                    } else if (((a * b * c * d) / (a + b + c + d) == 3) && n % 3 == 0) {
                        console.log(`${d}${c}${b}${a}`);
                        return;
                    }
                }
            }
        }
    }
    console.log("Nothing found");
}