Master Wang produces 500 parts, of which 498 parts are qualified, find the pass rate.
王师傅生产500个零件，其中有498个零件合格，求合格率．
<gadget id="calculator">498 / 500</gadget>
<output>249/250 = around 0.996</output>

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

<gadget id="calculator">(249/250) * 1</gadget>
<output>249/250 = around 0.996</output>

<result>249/250 = around 0.996</result>