A snail crawls 3.9 meters in 13 minutes, how many meters does the snail crawl on average per minute?
一只蜗牛13分钟爬行了3.9米，蜗牛平均每分钟爬行多少米？
<gadget id="calculator">3.9 / 13</gadget>
<output>0.3</output>

<result>0.3</result>