A vector field $\displaystyle \vec{F} $ has the property that the flux of $\displaystyle \vec{F} $ out of a small cube of side 0.01 centered around the point (2, 9, 11) is 0.003. Estimate div$\displaystyle \vec{F} $ at the point (2, 9, 11).

Can someone help me how to start this problem off?