Number of photons that provide given energy

[emma3001]

How many photons of light having a wavelength of 656nm are necessary to provide 1J of energy?

I know the equation E=hc/lambda, however I am unsure of what help calculating E would be. Do I just divide 1J by what E is?

 

[Redbelly98]

Yes. Think in terms of units:

E has units of energy per photon
1J has units of energy

So 1J / E has units of ________ ?