A snail crawls 3 decimeters in 6 minutes, at this speed, how many meters can it crawl in 1 hour?
一只蜗牛6分钟爬行3分米，照这样的速度，它1小时能爬行多少米．
<gadget id="calculator">0.5 * 60</gadget>
<output>30</output>

<gadget id="calculator">30 / 10</gadget>
<output>3</output>

<result>3</result>