Three trucks transport 72 tons of goods at one time. According to this calculation, if we add four more trucks, how many tons can we transport at one time?
3辆卡车一次共运货72吨，照这样计算，再增加4辆这样的卡车，一次共可以运货多少吨？
<gadget id="calculator">72 / 3</gadget>
<output>24</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">24 * 7</gadget>
<output>168</output>

<result>168</result>