The transportation team wants to transport a batch of coal, each truck loads 12 tons, and 15 trucks are loaded, which is exactly half of the batch of coal. The remaining 18 tons per truck, how many more trucks are needed to finish loading?
运输队要运送一批煤，每车装12吨，装了15车，正好装完这批煤的一半．剩下的每车装18吨，还需要几辆车才能装完？
<gadget id="calculator">12 * 15</gadget>
<output>180</output>

<gadget id="calculator">180 / 18</gadget>
<output>10</output>

<result>10</result>