Example:
15 wavelength in exametres = 4.496887e-18 GHz
1 wavelength in exametres = 2.997925e-19 GHz | 1 GHz = 3.335641e+18 wavelength in exametres
Conversion Steps:
15 × (2.997925e-10 / 1e+9) = 4.496887e-18