Check a bag of spicy chips. There are 55 pieces that are qualified and 45 pieces that are unqualified. What is the pass rate of this bag of spicy chips?
检查一袋麻辣片，有55片合格，45片不合格，这袋麻辣片的合格率是多少．
<gadget id="calculator">55 + 45</gadget>
<output>100</output>

<gadget id="calculator">55 / 100</gadget>
<output>11/20 = around 0.55</output>

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

<gadget id="calculator">(11/20) * 1</gadget>
<output>11/20 = around 0.55</output>

<result>11/20 = around 0.55</result>