Chemistry henry's law help

What is the solubility of cumene(g) in water at 28°C and a partial pressure of 6.180e-1 mmHg? Henry's law constant at this temperature is 13.057 L*atm/mol.

i keep getting .047331M but the answer 6.22X1-^-5M. what am i missing?

I believe that you forgot to change P to atmospheres
use
0.681 mm /760 mm/atm = 8.96E-4 atm

I got the given answer with this