Revise the calculation for Hats Sold in cell C5 on the Monthly Sales Analysis sheet using 3-D references to include the Hats Sold in Store 5 (You want the new total calculation for thissheet to include 5 stores, 4 from the original file plus 1 from the external file).12. Revise the calculation for the Sales Averages in cell E5 on the Monthly Sales Analysissheet using 3-D references to average the Sales Totals for all five sector sheets. You muststill use theAVERAGEfunction-but this time the supp.