Niu Niu is a years old, and Yaya is 3 years older than Niu Niu. 5 years later, how old is Yaya a+?
牛牛a岁，丫丫比牛牛大3岁．5年后，丫丫a+多少岁．
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<result>8</result>