Lele's age is 12 years old, he is younger than his father (11/15), how old is Lele's father?
乐乐的年龄是12岁，他比爸爸的年龄少(11/15)，乐乐爸爸的年龄多大？
<gadget id="calculator">11 / 15</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">1 - (11/15)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">12 / (4/15)</gadget>
<output>45</output>

<result>45</result>