Master Li processed 10 parts and 1 failed. What is the pass rate?
李师傅加工了10个零件，1个不合格，合格率为多少
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

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

<gadget id="calculator">(9/10) * 1</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>