In a certain test, there were 240 students in the fourth grade, and only 3 failed the math test. What is the passing rate?
在某次考试中，四年级有学生240人，数学考试只有3人不及格，及格率是多少．
<gadget id="calculator">240 - 3</gadget>
<output>237</output>

<gadget id="calculator">237 / 240</gadget>
<output>79/80 = around 0.9875</output>

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

<gadget id="calculator">(79/80) * 1</gadget>
<output>79/80 = around 0.9875</output>

<result>79/80 = around 0.9875</result>