Example:
15 wavelength in petametres = 4.496887e+12 aHz
1 wavelength in petametres = 2.997925e+11 aHz | 1 aHz = 3.335641e-12 wavelength in petametres
Conversion Steps:
15 × (2.997925e-7 / 1e-18) = 4.496887e+12