wavelength=frecquency -299,729,458 m/s)/3000000m/s)=99.9m/s

it is the ratio region of the electromagnetic spectrum.

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I am not an expert but all I know, is that, wavelength and frequency are inversely proportional!  which means, if an object has a high frequency in the spectrum, it means, it has a shorter wavelength, if it has a longer wavelength in the spectrum, it means, it has a lower frequency. If you multiply the frequency by the wavelength, you will get the wave speed or velocity of the wave. That is all I know.
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