The Mizuifang swimming pool is 50 meters long. If you swim 1 kilometer, how many such lengths do you need to swim?
水伊方游泳池长50米，如果游1千米，要游多少个这样的长度？
<gadget id="calculator">1_000 / 50</gadget>
<output>20</output>

<gadget id="calculator">1 * 20</gadget>
<output>20</output>

<result>20</result>