The load of a heavy truck is 8 tons, and the weight of a light truck is 5 tons. Now a batch of coal is to be sent to the factory. The two trucks deliver 12 times at the same time. How many tons is this batch of coal?
一辆重型车的载重是8吨，一辆轻型车载重量是5吨，现要把一批煤送到工厂，两车同时送了12趟，这批煤有几吨？
<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">13 * 12</gadget>
<output>156</output>

<result>156</result>