Dad said to grandpa: "Dad, when I am your age, you will be 86 years old." Grandpa said to Dad: "When I was your age, you were only 11 years old." Ask grandpa how old this year.
爸爸对爷爷说："老爸，我到您现在这么大时，您就86岁了，"爷爷对爸爸说："我像你这么大年龄时，你只有11岁．"问爷爷今年多少岁．
<gadget id="calculator">86 - 11</gadget>
<output>75</output>

<gadget id="calculator">1 + 1 + 1</gadget>
<output>3</output>

<gadget id="calculator">75 / 3</gadget>
<output>25</output>

<gadget id="calculator">25 + 11 + 25</gadget>
<output>61</output>

<result>61</result>