Xiao Ming did 20 verbal calculations and got 1 wrong. What is the accuracy of his oral calculations this time?
小明做了20道口算题，错了1道，他这次口算的准确率是多少．
<gadget id="calculator">20 - 1</gadget>
<output>19</output>

<gadget id="calculator">19 / 20</gadget>
<output>19/20 = around 0.95</output>

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

<gadget id="calculator">(19/20) * 1</gadget>
<output>19/20 = around 0.95</output>

<result>19/20 = around 0.95</result>