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

Problem: find the area of a parallelogram with base 10 cm and height 20 cm .
200

Problem: two trains each 120 m in length each , are running on two parallel lines in opposite directions . if one goes at the speed of 85 km / h while the other travels at 65 km / h . how long will it take for them to pass each other completely .
10.07 sec

Problem: what is the sum of the first 23 natural numbers ( starting from 1 ) ?

276