On June 9, 2009, 78 workers went to work in the first workshop of the automobile factory, and 2 workers did not go to work. What is the attendance rate of the first workshop of the automobile factory on this day?
2009年6月9日，汽车厂一车间有78名工人上班，有2名工人没有上班，这一天汽车厂一车间的出勤率是多少．
<gadget id="calculator">78 + 2</gadget>
<output>80</output>

<gadget id="calculator">78 / 80</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>