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

Example Input: Problem: there are 7 executives , including the ceo and cfo , that are asked to form a small team of 4 members . however , the ceo and cfo may not both be assigned to the team . given this constraint , how many ways are there to form the team ?
Example Output: 25

Example Input: Problem: the diameter of the driving wheel of a bus in 140 cm . how many revolutions per minute must the wheel make in order to keep a speed of 33 kmph ?
Example Output: 125

Example Input: Problem: in what time will a train 200 m long cross an electric pole , it its speed be 144 km / hr ?
Example Output:
5 se