There were 748 tourists on board a passenger ship, 368 people disembarked at Chaoyang Wharf in Chongqing, and 407 people boarded again. How many tourists are there on this passenger ship?
一艘客轮上原有游客748人，到重庆朝阳码头下船368人，又上来407人，这时这艘客轮上有游客多少人？
<gadget id="calculator">748 - 368</gadget>
<output>380</output>

<gadget id="calculator">380 + 407</gadget>
<output>787</output>

<result>787</result>