functions - Prove Cardinality of Sets Exponentiation

I am studying for an exam in elementary set theory and I am not understanding the proof for this theorem:

For any three sets $A,B,C$:

$(A^B)^C \sim A^{(B \times C)}$

I know I need to find a bijective function $G : (C\rightarrow A^B) \rightarrow (B\times C \rightarrow A)$.
But I don't have a clue.

Any help would be appreciated.
Thanks