A middle school is made up of grades 6,7, and 8, and has about the same number of male and female students in each grade. Explain how to use a simulation to find the experimental probability that the first 50 students who arrive are male and 7th graders

I don't really understand what it's asking

, but I think it wants me to see if it's correct or not

I think this is fully incorrect because there has to be one girl out of those 50 people and I also think that there are gonna be 5th and 6th graders in those 50 people too!