what is the leastvalue of x . so that 45 x 09 is divisible by 3 ?
"the sum of the digits of the number is divisible by 3 , then the number is divisible by 3 . 4 + 5 + x + 0 + 9 = 18 + x least value of x may be 0 therefore 18 + 0 = 18 is divisible by 3 . a"
subtract(3, reminder(add(add(add(floor(divide(45, const_10)), reminder(45, const_10)), floor(divide(09, const_10))), reminder(09, const_10)), 3))