Create a function that returns the smaller number as a string.
Examples:
smallerNum("21", "44") ➞ "21"
smallerNum("1500", "1") ➞ "1"
smallerNum("5", "5") ➞ "5"

smallerNum = (n1,n2) => {
n1 *= 1;
n2 *= 1;
var arr = [n1,n2];
return Math.min(...arr);
}
smallerNum("100", "4");