There were 754 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754人，到重庆朝阳码头下船368人，又上来407人，这时这客轮上有游客多少人？
<gadget id="calculator">754 - 368</gadget>
<output>386</output>

<gadget id="calculator">386 + 407</gadget>
<output>793</output>

<result>793</result>