There are two classes in the sixth grade of Nanxiao Primary School. There are 39 students in class 61 today, and 1 person asked for sick leave. There are 40 students in class 6 and 2, and 38 students arrived at the school. What is the attendance rate of the sixth grade students of Nanxiao Primary School today?
南小六年级有两个班，六1班今天到校39人，1人请病假．六2班40人，到校38人，今天南小六年级学生的出勤率是多少
<gadget id="calculator">38 + 39</gadget>
<output>77</output>

<gadget id="calculator">39 + 1 + 40</gadget>
<output>80</output>

<gadget id="calculator">77 / 80</gadget>
<output>77/80 = around 0.9625</output>

<result>77/80 = around 0.9625</result>