It turned out that 9 children were watching the National Day military parade, and then 6 more children came. How many children are watching the National Day military parade now?
原来有9个小朋友正在收看国庆阅兵仪式，后来又来了6个小朋友．现在共有多少个小朋友在收看国庆阅兵仪式？
<gadget id="calculator">9 + 6</gadget>
<output>15</output>

<result>15</result>