There were 967 people on a train. 288 people went down first, and then 105 people came up again. How many people are on the train now?
一辆火车上原有967人．先下去288人，后来又上来105人．火车上现在有多少人？
<gadget id="calculator">967 - 288</gadget>
<output>679</output>

<gadget id="calculator">679 + 105</gadget>
<output>784</output>

<result>784</result>