208.3 meters
The product of the wavelength multiplied by the frequency will equal the speed of light which is 299792458 m/s. Simple algebra will tell you that you can divide the speed of light by the frequency to get the wavelength. So
224997958 m/s / 1080000 1/s = 208.3314426 m
Rounding to 4 significant digits gives you 208.3 meters.
