A company wants to transport 120 tons of coal. After transporting 5 times with one truck, there are still 30.5 tons left. How many tons does this truck transport each time?
某公司要运120吨煤，用一辆卡车运了5次后还剩30.5吨没有运走，这辆卡车每次运多少吨？
<gadget id="calculator">120 - 30.5</gadget>
<output>89.5</output>

<gadget id="calculator">89.5 / 5</gadget>
<output>17.9</output>

<result>17.9</result>