There are a total of 250 parts in a batch, and 5 of them are rejected. What is the pass rate of this batch of parts?
一批零件共250个，其中5个废品，这批零件的合格率是多少．
<gadget id="calculator">250 - 5</gadget>
<output>245</output>

<gadget id="calculator">245 / 250</gadget>
<output>49/50 = around 0.98</output>

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

<gadget id="calculator">(49/50) * 1</gadget>
<output>49/50 = around 0.98</output>

<result>49/50 = around 0.98</result>