Example:
15 wavelength in petametres = 4.496887e-15 GHz
1 wavelength in petametres = 2.997925e-16 GHz | 1 GHz = 3.335641e+15 wavelength in petametres
Conversion Steps:
15 × (2.997925e-7 / 1e+9) = 4.496887e-15