I need help with part A1 please

with the following Information for Mercer Inc. Tor the month of January 2015 Date Description Quantity Unit Cost or Selling Price January 1 Beginning 220 $17 January 5 January 8 January 10 January 15 January 16 January 20 January 25 inventory Purchase Sale Sale return Purchase Purchase return Sale Purchase 308 242 22 121 11 198 44 (a1) Calculate the Moving-average cost per unit at January 1, 5, 8, 15, 20, & 25. (Round answers to 3 decimal places, e.g. $5.251.) Moving-Average Cost per unit January 1 January 5 January 8 January 10 January 15 January 16 January 20 January 25 LINK TO TEXT