Pinghai Homestead needs to build a 420-meter-long water pipe. If each water pipe is 6 meters long, how many pipes are needed at least?
平海家园要修一条420米长的自来水管道，如果每根自来水管长6米，至少需要多少根？
<gadget id="calculator">420 / 6</gadget>
<output>70</output>

<result>70</result>