The crawling speed of a snail is 0.045 km/h. How many hours does it take for a snail to crawl 0.135 kilometers?
蜗牛的爬行速度是0.045千米/时．如果要爬行0.135千米，蜗牛要爬多少小时？
<gadget id="calculator">0.135 / 0.045</gadget>
<output>3</output>

<result>3</result>