The task is to generate the correct answer for a given math problem.
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Question: Problem: the average salary of 20 people in the shipping department at a certain firm is $ 1000 . the salary of 10 of the employees is $ 600 each and the salary of 6 of the employees is $ 200 each . what is the average salary of the remaining employees ?

Answer: $ 3200


Question: 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 ?

Answer: 125


Question: Problem: - 74 x 29 + 265 = ?

Answer:
- 1881