Master Li made 80 parts, and 4 parts were unqualified after inspection. What is the pass rate of this batch of parts made by Master Li?
李师傅做了80个零件，经检验有4个零件不合格，李师傅做的这批零件的合格率是多少．
<gadget id="calculator">80 - 4</gadget>
<output>76</output>

<gadget id="calculator">76 / 80</gadget>
<output>19/20 = around 0.95</output>

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

<gadget id="calculator">(19/20) * 1</gadget>
<output>19/20 = around 0.95</output>

<result>19/20 = around 0.95</result>