There are 50 students in Class 1, and 5 of them failed the mid-term exam. Find the passing rate of this class.
六1班有50人，期中考试有5人不及格，求这个班的及格率．
<gadget id="calculator">50 - 5</gadget>
<output>45</output>

<gadget id="calculator">45 / 50</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>