Xiao Ming did oral arithmetic training, a total of 50 questions, 5 questions were wrong. What is the correct rate of Xiao Ming's oral arithmetic training this time?
小明做口算训练，共50题，做错了5题．小明这次口算训练的正确率是多少．
<gadget id="calculator">50 - 5</gadget>
<output>45</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>