Professor Collins surveyed a random sample of 420 statistics students. One of the questions was "Will you take another math class?" The results show that 252 students said yes. What is the sample proportion , p-hat, of students who say they will take another math class?

I don't understand how to put it into my calculator or even what steps to take

Google "p-hat statistics". You will find the same homework question asked in a different manner... Professor Blah Blah asked... having a year end party etc. Based on proportion and shows how to do the work. What did people do before calculators-No one can do division anymore let alone figure exact change.