A shopping mall sold 13 fur coats at 680 yuan each on the first day, and 23 of the same fur coats on the second day. How much more did you earn on the second day than on the first day?
某商场第一天卖出皮大衣13件，每件680元，第二天卖出同样的皮大衣23件．第二天比第一天多收入多少元？
<gadget id="calculator">23 - 13</gadget>
<output>10</output>

<gadget id="calculator">10 * 680</gadget>
<output>6_800</output>

<result>6_800</result>