1500 parts are processed, and 3 waste products are found after inspection. What is the pass rate of this batch of parts?
加工1500个零件，经过检验发现有3个废品，这批零件的合格率多少．
<gadget id="calculator">1_500 - 3</gadget>
<output>1_497</output>

<gadget id="calculator">1_497 / 1_500</gadget>
<output>499/500 = around 0.998</output>

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

<gadget id="calculator">(499/500) * 1</gadget>
<output>499/500 = around 0.998</output>

<result>499/500 = around 0.998</result>