I went on the maths competition today, and there was an awesome task that went something like this:

You can only fill each letter with one positive normal number(1,2,3,4,5...), and circle of which the number can you get from the following:

K*A*N*G*A*R*O*O
_________________
       G*A*M*E

A)1
B)2
C)3
D)5
E)7

So, same letters mean the same number and you can only use each same number only once(ie. If you decide to give K=1, that means no other letter can be 1)

I hope you understand it^^, enjoy solving this interesting 'puzzle'.