Xiaohong is 8 years old this year. Her age is that of her elder brother (8/15), and her elder brother's age is that of her father (3/8). How old is her father this year?
小红今年8岁，它的年龄是哥哥的(8/15)，哥哥的年龄又是父亲的(3/8)，父亲今年多少岁．
<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">8 / (8/15) / (3/8)</gadget>
<output>40</output>

<result>40</result>