public static void Main()
int[] arr = MultiplyNumbersDivisibleBy5 ( new int []{ 4, 5, 6 });
Console.WriteLine(RaiseByN(2,6));
public static int[] MultiplyNumbersDivisibleBy5(int[] numbers) {
for(int i = 0; i < numbers.Length; i++){
if(numbers[i] % 5 == 0) {
numbers[i] = numbers[i] * 10;
public static long RaiseByN(long numberBase, int numberExponent) {
for (int i = numberExponent; i > 1; i--) {
numberBase *= numberBase;