You can use any combination of up to 255 numbers or cell references in the PRODUCT function. For example, the formula =PRODUCT (A2,A4:A15,12,E3:E5,150,G4,H4:J6) multiplies two single cells (A2 and G4), two numbers (12 and 150), and three ranges (A4:A15, E3:E5, and H4:J6).