Xiao Ming is 2 years older than Xiao Qiang, and 4 years younger than Xiao Hua. If Xiao Qiang is Y years old, then Xiao Hua is Y+how old.
小明比小强大2岁，比小华小4岁，若小强Y岁，则小华Y+多少岁．
<gadget id="calculator">2 + 4</gadget>
<output>6</output>

<result>6</result>