A worker makes 120 parts, and 15 are unqualified. What is the pass rate?
一个工人做了120个零件，不合格的有15个，合格率是多少
<gadget id="calculator">120 - 15</gadget>
<output>105</output>

<gadget id="calculator">105 / 120</gadget>
<output>7/8 = around 0.875</output>

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

<gadget id="calculator">(7/8) * 1</gadget>
<output>7/8 = around 0.875</output>

<result>7/8 = around 0.875</result>