How does the situation need to find the product selection?
Users questions: I want a number is multiplied by 2, but the number of columns is obtained by filtering the results to those who do not have to multiply the number by 2, and ask how.
Experts answer: so: 1, type 2 in the blank cell, copy. 2, select the screening area, "edit * Location * Location * see conditions Cell * OK ", that is, only to see the current selected cell 3," Paste Special * op * by * OK ", meaning that up questions asked for, only to see the cell multiplied by 2.