There are three people, A, B, and C. A is older (1/5) than B, and B is (1/5) older than C. Then, by how much is A older than C?
有甲、乙、丙三个人，甲的年龄比乙大(1/5)，乙的年龄比丙大(1/5)，那么甲的年龄比丙大几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) * (6/5)</gadget>
<output>36/25 = around 1.44</output>

<gadget id="calculator">(36/25) - 1</gadget>
<output>11/25 = around 0.44</output>

<result>11/25 = around 0.44</result>