Dad is 34 years old this year, and his son's age will be his father's age (2/9) two years later. Guess how old his son is this year?
爸爸今年34岁，两年后儿子的年龄是爸爸年龄的(2/9)，猜猜儿子今年几岁？
<gadget id="calculator">34 + 2</gadget>
<output>36</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">36 * (2/9)</gadget>
<output>8</output>

<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<result>6</result>