A symmetrical three-phase three-wire $RYB$ system is connected to a balanced delta-connected load. The $RMS$ values of the line current and line-to-line voltage are $\text{10 A}$ and $\text{400 V}$ respectively. The power in the system is measured using the two wattmeter method. The first wattmeter connected between $R$-line and $Y$-line reads zero. The reading of the second wattmeter (connected between $B$-line and $Y$-line) in $\text{watt}$ is ___________.