There are 90 tons of rice in the warehouse. 24.6 tons were transported for the first time, 33.4 tons were transported for the second time, and the rest were transported by vehicles with a load of 4 tons. How many vehicles are needed?
仓库有90吨大米．第一次运走24.6吨，第二次运走33.4吨，剩下的用载重4吨的汽车运走，还要几辆汽车？
<gadget id="calculator">24.6 + 33.4</gadget>
<output>58</output>

<gadget id="calculator">90 - 58</gadget>
<output>32</output>

<gadget id="calculator">32 / 4</gadget>
<output>8</output>

<result>8</result>