A car transports coal, originally planned to transport coal three times a day, and it can be transported in 10 days. Actually shipped 5 times a day, how many days did it actually take?
一辆汽车运煤，原计划每天运3趟，10天可以运完．实际每天运5趟，实际运了多少天？
<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">30 / 5</gadget>
<output>6</output>

<result>6</result>