A factory purchased 120 tons of coal, 84 tons have already been shipped, and the rest wants to be transported by trucks with a load of 6 tons. How many such trucks are needed after one shipment?
某厂购进120吨煤炭，已经运来84吨，剩下的想用载重6吨的卡车来运，一次运完，需要几辆这样的卡车？
<gadget id="calculator">120 - 84</gadget>
<output>36</output>

<gadget id="calculator">36 / 6</gadget>
<output>6</output>

<result>6</result>