There is a pile of yellow sand, 18 tons are transported away first, and the rest are transported by 7 vehicles, each truck transports 6 tons, how many tons are there in this pile of yellow sand?
有一堆黄沙，先运走18吨，剩下的用7辆车运完，每车运6吨，这堆黄沙共有多少吨？
<gadget id="calculator">6 * 7</gadget>
<output>42</output>

<gadget id="calculator">18 + 42</gadget>
<output>60</output>

<result>60</result>