There were originally 205 people on a passenger ship, 79 people disembarked midway, and 128 people boarded later. How many people were on board when the ship sailed again?
一艘客轮原有205人，中途有79人下船，后来又有128人上船．再开船时客轮上有多少人？
<gadget id="calculator">205 - 79</gadget>
<output>126</output>

<gadget id="calculator">126 + 128</gadget>
<output>254</output>

<result>254</result>