If 40 commodities are sampled and tested, 38 of them are qualified. What is the qualified rate of this commodity?
抽样检验40个商品，其中有38件合格，这种商品的合格率是多少．
<gadget id="calculator">38 / 40</gadget>
<output>19/20 = around 0.95</output>

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

<gadget id="calculator">(19/20) * 1</gadget>
<output>19/20 = around 0.95</output>

<result>19/20 = around 0.95</result>