Use hubble's law to determine the distance to a galaxy which is moving away at a velocity of 3,500 km/s. (assume that h = 70 km/s/mpc)

The solution for this problem:

The distance in mega parsec is equal to recession velocity / H, where h is equal to 50 mega parsec. The explanation for this is:1 parsec = 2. E+05 AU, nearly. 50 mega parsec = 1. E+13 AU, nearly. 1 mega means E+06 (million).