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Read my Journal nd hlp. calculating frequency

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I have a problem that states as follows:

Calculate the frequency (in Hz) of energy of 3.5 x 10^-14 joules. (c=3.00 x 10^8 m/s; h=6.63 x 10^-34 joule-seconds)

I need help in setting this problem up. I found the equation E=hv, where E= the increase of energy, h= planck's constant, and v= the freqency of light which increases propportionally with an increase in energy.

I am going crazy and just don't get it...........