There are 300 people on a ship, 136 people disembark in the morning and 67 people board in the afternoon, how many people are there on the passenger ship when the ship starts again?
一艘轮船，有300个人，上午下船136个人，下午上船67个人，那么再开船时客船上有多少个人．
<gadget id="calculator">300 - 136</gadget>
<output>164</output>

<gadget id="calculator">164 + 67</gadget>
<output>231</output>

<result>231</result>