There were originally 23 passengers on the No. 11 bus, but 8 people got off at the post office station, and 10 people came up again. How many passengers are there in the car now?
11路公共汽车上原有乘客23人，到邮电局站下了8人，又上来10人．现在车上有乘客多少人．
<gadget id="calculator">23 - 8</gadget>
<output>15</output>

<gadget id="calculator">15 + 10</gadget>
<output>25</output>

<result>25</result>