The fruit market bought 80 tons of apples, and 56 tons have been shipped away. The rest will be transported by trucks with a load of 4 tons. How many such vehicles are needed for one shipment?
水果市场购进80吨苹果，已经运走了56吨．剩下的用载重4吨的货车来运，一次运完需要多少辆这样的汽车？
<gadget id="calculator">80 - 56</gadget>
<output>24</output>

<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<result>6</result>