Teacher Li is 24 years older than Xiao Ai this year. Next year, Xiao Ai will be exactly (1/4) of Teacher Li's age. How old is Xiao Ai this year?
李老师今年比小艾大24岁，明年小艾的年龄正是李老师年龄的(1/4)，小艾今年多大？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">24 / (3/4)</gadget>
<output>32</output>

<gadget id="calculator">32 - 24 - 1</gadget>
<output>7</output>

<result>7</result>