Make an equation true by moving one of the cards

Question

I came accross with this puzzle:

There is an equation written in cards so that every card represent a number or a mathematical symbol. Move one of the cards so that equation is true. The equation looks like this:

$2 * ( 5 - 1 ) * 3 = \mathrm{3}^{3}$

Here symbol * means multiplication. I am stumped with this question. The moving of the card is in my opinion ill-defined operation as if you move for example number 1 then there is minus - sign left alone. Any hints would be much appreciated!

Answer 1

Moving the left hand bracket gives the correct equation $$(2\times5-1)\times3=3^3$$