workshop produces a batch of parts. The inspector randomly inspects some parts. After sampling 50 parts, one of them is unqualified. What is the pass rate of this batch of parts?
某车间生产一批零件，检验员抽检了一些零件，抽检了50个，其中1个不合格，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>