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

[EX Q]: Problem: a and b together can complete work in 6 days . a alone starts working and leaves it after working for 4 days completing only half of the work . in how many days it can be completed if the remaining job is undertaken by b ?
[EX A]: 12

[EX Q]: Problem: a train 300 m long is running with a speed of 68 kmph . in what time will it pass a man who is running at 8 kmph in the same direction in which the train is going ?
[EX A]: 18 sec .

[EX Q]: Problem: what is remainder of the division ( 1625 * 1627 * 1629 ) / 12 ?
[EX A]:
3