There are two kinds of fares for a train, 3.5 yuan each, with 420 seats, and 6 yuan each, with 380 seats. If a certain time 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420个座位，6元一张的有380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">3.5 * 420</gadget>
<output>1_470</output>

<gadget id="calculator">6 * 380</gadget>
<output>2_280</output>

<gadget id="calculator">1_470 + 2_280</gadget>
<output>3_750</output>

<result>3_750</result>