Let $\overrightarrow{\mathrm{E}}(\mathrm{x},\mathrm{y},\mathrm{z})=2{\mathrm{x}}^2\hat{\mathrm{i}}+5\mathrm{y}\hat{\mathrm{j}}+3\mathrm{z}\hat{\mathrm{k}}$ the value of ∭v $(\overrightarrow{\mathrm{\nabla }}.\overrightarrow{E})dV$, where v is the volume enclosed by the unit cube defined by 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, and 0 ≤ z ≤ 1 is