title: Count Trailing Zeroes Factorial Number
signature: count_trailing_zeroes_factorial_number <- function(n) {
test_code: 
  
  
  # SOLUTION CODE
  # ============================================
  PLACEHOLDER_CODE_BODY
  
  # TESTING CODE 
  # ============================================
  validate_solution <- function(actual, expected) {
      toString(actual)==toString(expected)
  }
  
  driver <- function(n, expected){
      if (validate_solution(PLACEHOLDER_FN_NAME(n), expected)){
          "PASSED"
      } else{
          "FAILED"
      }
  }
  
  main <- function() {
      cat(sprintf("TEST-0...%s\n",driver(
          9L, 
          1L
      )))
  
      cat(sprintf("TEST-1...%s\n",driver(
          43L, 
          9L
      )))
  
      cat(sprintf("TEST-2...%s\n",driver(
          50L, 
          12L
      )))
  
      cat(sprintf("TEST-3...%s\n",driver(
          32L, 
          7L
      )))
  
      cat(sprintf("TEST-4...%s\n",driver(
          37L, 
          8L
      )))
  
      cat(sprintf("TEST-5...%s\n",driver(
          51L, 
          12L
      )))
  
      cat(sprintf("TEST-6...%s\n",driver(
          33L, 
          7L
      )))
  
      cat(sprintf("TEST-7...%s\n",driver(
          49L, 
          10L
      )))
  
      cat(sprintf("TEST-8...%s\n",driver(
          1L, 
          0L
      )))
  
      cat(sprintf("TEST-9...%s\n",driver(
          75L, 
          18L
      )))
  
  }
  
  main()
source_py: def count_trailing_zeroes_factorial_number(n):
      count = 0
      i = 5
      while ((n / i) >= 1):
          count += int((n / i))
          i *= 5
      return int(count)
source_cpp: int count_trailing_zeroes_factorial_number(int n) {
    int count = 0;
    for ( int i = 5;
    n / i >= 1;
    i *= 5 ) count += n / i;
    return count;
  }