Xiao Wang is 2 years older than Xiao Li and 3 years younger than Xiao Chen. If Xiao Li is a, what is Xiao Chen's age?
小王比小李大2岁，比小陈年轻3岁，假如小李是a岁的话，小陈的年龄是多少岁．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<result>5</result>