which number need to add to 172835 to get a number exactly divisible by 136 ?
"172835 / 136 = 1270 and reminder = 115 . 136 - 115 = 21 so , the next number divisible by 115 is 21 places in front of 172835 which means 21 + 172835 = 172856 21 should be added to 172835 d"
multiply(136, subtract(add(floor(divide(172835, 136)), const_1), divide(172835, 136)))