[redhead]

Think about the values here

While (start <= 100)
  num = start  # num and start equals 0
  While (start Mod 5 = 0)  # 0 mod 5 is 5, this is never entered
    start = start / 5  # 0/5 is 0 start is still 0
    i += 1 # i is incremented 1, but since we never entered, it will never be incremented
  End While
  start = num # since num is the orriginal start value, start is still 0
  While (start Mod 2 = 0)  # 0 mod 2 is 2, this is never entered
    start = start / 2 # 0/2 is 0, start will never change
    start += 1 # start is incremented, but since we never entered start never gets incremented
  End While
End While