code: func countTrailingZeroes(i int, word int32) int {
  	trailing := 0
  	for word%powers10[i] == 0 {
  		i++
  		trailing++
  	}
  	return trailing
  }
docs: /*
    countTrailingZeros returns the number of trailing zeroes that can be removed from fraction.
  
    @param   i    start index
    @param   word  value to compare against list of powers of 10
  */