2,500 tons of coal need to be transported from the coal mine, and each wagon with 50 tons of coal is used to transport it. 36 wagons have already been loaded, how many wagons must be loaded to complete the task?
从煤矿要运走2500吨煤，用每节装50吨煤的车皮来运，已经装了36节车皮，还要装多少节车皮才能完成任务？
<gadget id="calculator">2_500 / 50</gadget>
<output>50</output>

<gadget id="calculator">50 - 36</gadget>
<output>14</output>

<result>14</result>