Bchemist4life

Problem stumped me: If a laser emits 1.3 times 10^-2 J of energy during a pulse, how many photons are emitted during the pulse? E=hv where h is plancks constant 6.626 times 10^-34 j-s v would be the frequency. From what I understand, the problem is giving me E, but I'm stuck on the rest. Just need a clue on where to go from here.