In order to meet the food urgently needed by the people in the disaster area, Liaoning Province urgently dispatched a batch of rice to the disaster area in Sichuan. The first transport team has 22 large trucks, each carrying 15 tons of rice; the second transport team has 25 large trucks, each transporting 12 tons of rice, and the remaining 50 tons have not been transported. How many tons is this batch of rice in total?
为了解决灾区群众急需的粮食，辽宁省往四川灾区紧急调运了一批大米．第一运输队22辆大卡车，每车装15吨大米；第二运输队25辆大卡车，每车装运12吨大米，还剩50吨没有运走．这批大米一共有多少吨？
<gadget id="calculator">15 * 22</gadget>
<output>330</output>

<gadget id="calculator">12 * 25</gadget>
<output>300</output>

<gadget id="calculator">330 + 300 + 50</gadget>
<output>680</output>

<result>680</result>