Xiaoxiao did the exercises, got 36 questions right, and got 4 questions wrong, what is her correct rate of doing the questions?
笑笑做练习，做对了36道，做错了4道，她做题的正确率是多少．
<gadget id="calculator">36 + 4</gadget>
<output>40</output>

<gadget id="calculator">36 / 40</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>