If a commodity is sampled, 100 are qualified and 25 are unqualified. What is the pass rate of this commodity?
抽检一种商品，有100件合格，25件不合格，这种商品的合格率是多少．
<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>