Among the 500 products, there are 25 defective products, what is the pass rate?
在500件产品中，有25件次品，合格率是多少．
<gadget id="calculator">500 - 25</gadget>
<output>475</output>

<gadget id="calculator">475 / 500</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>