I'm currently taking a stats course as a requirement for my BSN. I'm struggling as I hate numbers and letters mixed.

Hi! I'm currently taking a stats course as a requirement for my BSN. I'm struggling as I hate numbers and letters mixed. :( I have a TI-30XS calculator and am wondering if anyone can teach me how to plug in the numbers correctly to have it give me the binomial distribution sum? Or help me work out the question long hand?