if the number 517 * 324 is completely divisible by 7 , then the smallest whole number in the place of * will be :
sum of digits = ( 5 + 1 + 7 + x + 3 + 2 + 4 ) = ( 22 + x ) , which must be divisible by 7 . x = 6 . e
add(divide(subtract(multiply(floor(add(divide(add(add(add(add(add(multiply(reminder(multiply(power(const_100, const_2), const_10), 7), const_1), multiply(reminder(multiply(power(const_100, const_2), const_10), 7), const_1)), multiply(reminder(power(const_100, const_2), 7), 7)), multiply(reminder(const_100, 7), const_3)), multiply(reminder(const_10, 7), const_2)), const_4), lcm(7, reminder(const_1000, 7))), const_1)), lcm(7, reminder(const_1000, 7))), add(add(add(add(add(multiply(reminder(multiply(power(const_100, const_2), const_10), 7), const_1), multiply(reminder(multiply(power(const_100, const_2), const_10), 7), const_1)), multiply(reminder(power(const_100, const_2), 7), 7)), multiply(reminder(const_100, 7), const_3)), multiply(reminder(const_10, 7), const_2)), const_4)), reminder(const_1000, 7)), const_1)