The third-grade students have to take part in a 1,000-meter morning run every morning. Today, they have run 4 laps on the 200-meter circular track. How many meters are left to run?
三年级学生每天早上要参加1千米的晨跑，今天在200米的环形跑道上已跑了4圈，还剩多少米没跑？
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">200 * 4</gadget>
<output>800</output>

<gadget id="calculator">1_000 - 800</gadget>
<output>200</output>

<result>200</result>