Xiaohong and Xiaoming are competing with each other. Xiaohong calculated 24 questions in 2 minutes. Xiao Ming said: "It seems that my calculation speed is 25% faster than yours." How many questions does Xiao Ming calculate by mouth every minute?
小红和小明比赛口算．小红2分钟计算了24道题．小明说："看来我的计算速度要比你快25%．"小明每分钟口算多少道题？
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">12 * (5/4)</gadget>
<output>15</output>

<result>15</result>