There are 14 people in the class who get it right, 20 people get it wrong, and 6 people can't do it. What is the correct rate?
一道探究题，全班有14人做对，20人做错，6人不会做，正确率是多少．
<gadget id="calculator">14 + 20 + 6</gadget>
<output>40</output>

<gadget id="calculator">14 / 40</gadget>
<output>7/20 = around 0.35</output>

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

<gadget id="calculator">(7/20) * 1</gadget>
<output>7/20 = around 0.35</output>

<result>7/20 = around 0.35</result>