please do the question with a financial calc and show me how you got the answer thank you :)

For four years, Marie invested $4,800 each year in a bank's stocks. The stocks sold for $37 in 201,$52 in 202,$39 in 203, and $59 in 204. a. What is Marie's total investment in this bank? (Omit the "\$" sign in your response.) Total investment $ b. After four years, how many shares does Marie own? (Round your intermediate calculations DOWN and round your final answer DOWN to the nearest whole share.) Total number of shares c. What is the average cost per share of Marie's investment? (Round DOWN your intermediate calculations to the nearest whole share. Round your final answer to 2 decimat places. Omit the "\$" sign in your response.) Average cost per share $