i just know the solution,but i don't know how to solve it.please show me the process. thanks

The Charella Coffee Company has projected the following quarterly sales amounts for the coming year: (Negative amounts and deductions should be indicated by a minus sign. Round the final answer to 2 decimal places. Omit $ sign in your response.) Q1 $820 Q2 $ 850 03 04 $1,010 Sales $930 a. Accounts receivable at the beginning of the year are $345. Charella has a 45-day collection period. Calculate cash collections in each of the four quarters by completing the following: Q1 Q2 Q3 04 s345.00 410.00 465.00 425.00 Beginning receivables Sales 930.00 820.00 850.00 1,010.00 -890.00 -970.00 -755.00 -835.00 Cash collections 505.00 410.00 465.00 425.00 Ending receivables b. Recalculate the cash collections with a collection period of 60 days. Q1 Q2 Q3 Q4 620.00 t 0.01 345.00 $ 546.67 t 0.01 566.67 t0.01 $ Beginning receivables Sales 1,010.00 820.00 850.00 930.00 -876.67t 0.01 Cash collections -618.33 t 0.01 -830.00 t 0.01 -956.67 t 0.01 566.67 t 0.01 546.67 t.01 673.33 t 0.01 620.00 t 0.01 Ending receivables c. Recalculate the cash collections with a collection period of 30 days. Q1 Q2 Q3 Q4 273.33 t 0.01 310.00 t 0.01 345.00 283.33 t 0.01 Beginning receivables Sales 820.00 850.00 930.00 1,010.00 -903.33 t 0.01 | Cash collections -891.67 t.01 -840.00 t 0.01 -983.33 t 0.01 283. 33 t 0.01 310.00 t 0.01 336.67 t 0.01 $ 273. 33 t 0.01 Ending receivables