TOP URGENT -For example: there are 2 sheet one is "A" & another one is "B". A sheet included column A-A/C code, column B-name, column C-amount in HKD. row 1 to 10 is A co. row 11 to 25 is B co. row 26-33 is c co. Actually B sheet is a summary, column A-A/C code, column B-name, for column C s/b the total amount of "A" sheet's column C. How can I use the formula of Vlook in excel? you may answer the question in Chinese.