The task is to generate the correct answer for a given math problem.

Input: Consider Input: Problem: find the least number must be subtracted from 105829 so that remaining no . is divisible by 21 ?

Output: 10


Input: Consider Input: Problem: the cross - section of a cannel is a trapezium in shape . if the cannel is 8 m wide at the top and 6 m wide at the bottom and the area of cross - section is 700 sq m , the depth of cannel is ?

Output: 100


Input: Consider Input: Problem: a boat having a length 8 m and breadth 2 m is floating on a lake . the boat sinks by 1 cm when a man gets on it . the mass of the man is :


Output: 160 kg