The age ratio of Xiao Qiang and Xiao Ming is 5:7, Xiao Ming is 4 years older than Xiao Qiang, how old is Xiao Ming?
小强与小明的年龄比是5：7，小明比小强大4岁，小明多少岁？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 - (5/7)</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">4 / (2/7)</gadget>
<output>14</output>

<result>14</result>