The table below shows the closing monthly stock prices for IBM and Amazon. Calculate the simple three-month moving average for each month for both companies. (Input all amounts as positive values. Do not round intermediate calculations. Round your answers to 2 decimal places.) AMZN 177.44 619.21 627.44 568.43 549.30 501.98 490.78 607.59 535.11 511.66 605.77 588.08 660.20 IBM JanuaryY February March April May une July August September October November December 178.49 196.51 213.10 190.45 210.47 239.81 199.24 222.47 215.07 198.14 176.74