The factory produces a batch of parts with a total of 100 qualified and 25 unqualified. What is the pass rate?
工厂生产一批零件一共有100个合格，25个不合格，合格率是多少．
<gadget id="calculator">100 + 25</gadget>
<output>125</output>

<gadget id="calculator">100 / 125</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(4/5) * 1</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>