One day, there were 40 people in a company, and a total of 10 people took sick leave and personal leave due to the smog. What is the attendance rate of the company that day?
一天，某公司实到40人，因雾霾影响请病假和事假共10人，该公司当天的出勤率是多少
<gadget id="calculator">40 + 10</gadget>
<output>50</output>

<gadget id="calculator">40 / 50</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) * 1</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>