There were 305 people on board a passenger ship, 89 people disembarked when it docked, and 127 people boarded at the same time. How many people were on board when the ship sailed again?
一艘客轮上原有305人，靠岸时有89人下船，同时有127人上船．再开船时客轮上有多少人？
<gadget id="calculator">305 - 89</gadget>
<output>216</output>

<gadget id="calculator">216 + 127</gadget>
<output>343</output>

<result>343</result>