A rectangular square is 300 meters long and 200 meters wide. Kobayashi runs along the square for one week every day. How many meters does Kobayashi run every day?
一个长方形广场，长300米，宽200米，小林每天沿广场跑一周，小林每天跑多少米．
<gadget id="calculator">300 + 200</gadget>
<output>500</output>

<gadget id="calculator">500 * 2</gadget>
<output>1_000</output>

<result>1_000</result>