There are 51 students in a class. In a math test, 1 person asks for sick leave and 2 people fail. What is the passing rate for this test.
某班有51人，在一次数学测验中，有1人请病假，有2人不及格．这次测验的及格率是多少．
<gadget id="calculator">51 - 1 - 2</gadget>
<output>48</output>

<gadget id="calculator">51 - 1</gadget>
<output>50</output>

<gadget id="calculator">48 / 50</gadget>
<output>24/25 = around 0.96</output>

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

<gadget id="calculator">(24/25) * 1</gadget>
<output>24/25 = around 0.96</output>

<result>24/25 = around 0.96</result>