Workshop B processes 15,000 parts a day. After inspection, 30 waste products are found. Find the qualified rate of these parts.
乙车间一天加工零件15000个，经过检验，发现30个废品，求这批零件的合格率．
<gadget id="calculator">15_000 - 30</gadget>
<output>14_970</output>

<gadget id="calculator">14_970 / 15_000</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>