The quality inspector selected 50 parts from a batch of parts for inspection, and found that 1 part was unqualified. According to this calculation, what is the pass rate of this batch of parts?
质检员在一批零件里抽出50个进行检查，结果发现了1个零件不合格，按这样计算，这批零件的合格率是多少
<gadget id="calculator">50 - 1</gadget>
<output>49</output>

<gadget id="calculator">49 / 50</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>