16 times 2 is, in fact, 32 which is 4 times 8 so one possible answer us 16 x 2=2 x 2 x 8 where I have "added" ("inserted" would have been a better word) the digit 2 twice. Using "3" is a bit of a stretch. [itex]16*32= 8^3[/itex]

The whole problem is a bit of a stretch on the boundaries on reason... Eh well... thanks anyway. This was from some half-assed IQ test I encountered btw.