Class 6 1 goes out for activities on a certain day, 45 people are present, and 5 people ask for leave. What is the attendance rate of Class 6 1 on this day?
六1班某天外出活动，出勤45人，请假5人，这一天六1班的出勤率是多少．
<gadget id="calculator">45 + 5</gadget>
<output>50</output>

<gadget id="calculator">45 / 50</gadget>
<output>9/10 = around 0.9</output>

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

<gadget id="calculator">(9/10) * 1</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>