... time andcome up with a lengthy formula such as this:=IF(AND(A1>=0,A1< =99 99. 99) ,A1*0.08,IF(AND(A1>=10000,A1<= 199 99. 99) ,A1*0.105,IF(AND(A1>=20000,A1<= 399 99. 99) ,A1*0.12,IF(A1>=40000,A1*0.14,0))))This ... sales commissionsSelect Case SalesCase 0 To 99 99. 99: Commission = Sales * Tier1Case 1000 To 199 99. 99: Commission = Sales * Tier2Case 20000 To 399 99. 99: Commission = Sales * Tier3Case Is >= ... example arebased on the following table:Monthly Sales Commission Rate0– $9, 999 8.0%$10,000–$ 19, 999 10.5%$20,000–$ 39, 999 12.0%$40,000+ 14.0%Controlling Function RecalculationWhen you use a...