There are 429 boys in Xinguang Primary School, 15 more than girls. How many people are there in this school?
新光小学有男生429人，比女生多15人，这个学校一共有多少人？
<gadget id="calculator">429 - 15</gadget>
<output>414</output>

<gadget id="calculator">414 + 429</gadget>
<output>843</output>

<result>843</result>