A circular square is 250 meters long, and Kobayashi walked 4 times. How many kilometers did he walk in total?
一个圆形广场一圈长250米，小林走了4圈，他一共走了几千米？
<gadget id="calculator">250 * 4</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 / 1_000</gadget>
<output>1</output>

<result>1</result>