At the time of departure, the tour guide counted the number of people and found that there were 27 tourists in total, and 3 of them did not come. What is the attendance rate of this group of tourists?
出发时，导游清点人数，发现共来了27名游客，有3人没来．这个团游客的出席率是多少．
<gadget id="calculator">27 + 3</gadget>
<output>30</output>

<gadget id="calculator">27 / 30</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>