Use Gauss's law to find the charge enclosed by the cube with vertices $(\pm1, \pm1, \pm1)$ if the electric field is $\mathbf{E} (x, y, z) = 2\!x\mathbf{i} + 4\!y\mathbf{j} + 2\!z\mathbf{k}$.

$\varepsilon_{0}$