At the sports meeting, Xiaoqiang ran a 1500-meter race. One lap of the track is 400 meters long. He has already run 2 laps. How many meters does Xiaoqiang have to run?
运动会上小强进行1500米赛跑，跑道一圈长400米，他已经跑了2圈．小强还要跑多少米？
<gadget id="calculator">400 * 2</gadget>
<output>800</output>

<gadget id="calculator">1_500 - 800</gadget>
<output>700</output>

<result>700</result>