There are two kinds of fares for a train, 3.5 yuan each with 320 seats, and 6 yuan each with 310 seats. If a train is full, how much is the income of this passenger train this time?
一列火车的票价有两种3.5元一张的有320个座位，6元一张的有310个座位，如果某次客满，这列客车这次的收入是多少元？
<gadget id="calculator">320 * 3.5</gadget>
<output>1_120</output>

<gadget id="calculator">310 * 6</gadget>
<output>1_860</output>

<gadget id="calculator">1_120 + 1_860</gadget>
<output>2_980</output>

<result>2_980</result>