The age of Aunt Wang in the kindergarten this year is 8 times of Xiaohua's age this year, and 4 times of Xiaohua's age in 3 years, so how old is Xiaohua this year?
幼儿园的王阿姨今年的年龄是小华今年年龄的8倍，是小华3年后年龄的4倍，则小华今年多少岁．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/4) - (1/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">3 / (1/8) / 8</gadget>
<output>3</output>

<result>3</result>