There are 39 students in class one of the fifth grade, and one person asks for leave. What is the attendance rate of their class today?
五年级一班今天到校39人，1人请假，他们班这天的出勤率是多少．
<gadget id="calculator">39 + 1</gadget>
<output>40</output>

<gadget id="calculator">39 / 40</gadget>
<output>39/40 = around 0.975</output>

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

<gadget id="calculator">(39/40) * 1</gadget>
<output>39/40 = around 0.975</output>

<result>39/40 = around 0.975</result>