As shown in figure, a cuboid lies in a region with electric field $E=2 x^2 \hat{i}-4 y \hat{j}+6 \hat{k}$ N/C. The magnitude of charge within the cuboid is $\mathrm{n} \in_0 \mathrm{C}$. The value of n is _______ (if dimension of cuboid is 1 × 2 × 3 $m^3$)
