You will be given a definition of a task first, then some input of the task.
The task is to generate the correct answer for a given math problem.

Problem: ben left a job paying $ 75000 per year to accept a sales job paying $ 45000 per year plus 15 percent commission . if each of his sales is for $ 750 , what is the least number of sales he must make per year if he is not to lose money because of the change ?
Output:
267