There are 38 students in the sixth grade of Shenyu Primary School today, and 2 of them asked for leave. What is the absentee rate?
神峪小学六年级今天到校38人，2人请假，缺勤率是多少．
<gadget id="calculator">38 + 2</gadget>
<output>40</output>

<gadget id="calculator">2 / 40</gadget>
<output>1/20 = around 0.05</output>

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

<gadget id="calculator">(1/20) * 1</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>