Xiao Ming participates in the 400-meter race and runs 6 meters per second. After running for 50 seconds, how many meters are there to the finish line?
小明参加400米跑比赛，每秒跑6米，跑了50秒，离终点还有多少米？
<gadget id="calculator">50 * 6</gadget>
<output>300</output>

<gadget id="calculator">400 - 300</gadget>
<output>100</output>

<result>100</result>