Find Wavelength in a Vacuum: 4.3e+14 Hz

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Hi everyone anyways I have a question about finding the wavelength in a vacuum.

I am giving that the frequency is 4.3e+14 Hz and that the wave is in a vacuum and I am asked to find the wavelength. Anyways I did the calculations and I thought the velocity of a wave in vacuum is 3.0e+8 m/s is this correction, because after plugging those calculations in the webpage still says my answer is wrong.
 
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never mind i solved it thanks peoples
 

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