which number need to add to 7844213 to get a number exactly divisible by 549 ?
"7844213 / 549 = 14288 and reminder = 101 . 549 - 101 = 448 so , the next number divisible by 549 is 448 places in front of 7844213 which means 448 + 7844213 = 7844661 448 should be added to 7844213 c"
multiply(549, subtract(add(floor(divide(7844213, 549)), const_1), divide(7844213, 549)))