Torque About a Chosen Pivot Point

A rigid, horizontal door of width $w$ is supported by three hinges at distances $w/4$, $w/2$, and $3w/4$ from its left edge. A downward vertical force $F$ is applied at the right edge, and the door remains in static equilibrium. The torque from the applied force, calculated about the middle hinge, is non-zero. The torque from the middle hinge’s own reaction force, calculated about the same point, is what fraction of this applied torque?