On a certain day, light is shining perpendicularly on the surface of the earth with an intensity of $717$ W$/$m$2.$ Assuming that all the photons in the light have the same wavelength $($in vacuum$)$ of $745$ nm$,$ determine the number of photons per second per square meter that reach the earth.

Enter your answer in scientific notation.

If your answer is $5\mathrm{.}14$ x $104,$ input $5\mathrm{.}14$e$+4$ as your answer.