A worker processes 500 parts, and 4 of them are unqualified during the acceptance check. Find the pass rate of this batch of parts.
某工人加工500个零件，验收时有4个不合格，求这批零件的合格率．
<gadget id="calculator">500 - 4</gadget>
<output>496</output>

<gadget id="calculator">496 / 500</gadget>
<output>124/125 = around 0.992</output>

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

<gadget id="calculator">(124/125) * 1</gadget>
<output>124/125 = around 0.992</output>

<result>124/125 = around 0.992</result>