Master Li processed 120 parts, 9 of which were unqualified. What is the pass rate of his processed parts?
李师傅加工了120个零件，其中有9个不合格，他加工零件的合格率为多少．
<gadget id="calculator">120 - 9</gadget>
<output>111</output>

<gadget id="calculator">111 / 120</gadget>
<output>37/40 = around 0.925</output>

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

<gadget id="calculator">(37/40) * 1</gadget>
<output>37/40 = around 0.925</output>

<result>37/40 = around 0.925</result>