In Fig. 19-42, let V = 84 V and C1 = C2 = C3 = 7.7 µF. How much energy is stored in the capacitor network?

The capacitors, two are in a series and the other one is in parallel.

In Fig. 19-42, let V = 84 V and C1 = C2 = C3 = 7.7 μF. How much energy is stored in the capacitor network?
3 squared to the max of electron units.