There are 9 questions in a certain exam, and the number of people who got 1~9 questions correctly accounted for 82%, 65%, 92%, 93%, 68%, 98%, 70%, 60%, and 72% of the people who took the exam. If you do 5 or more questions correctly, then what is the minimum pass rate for this exam?
某次考试共有9道题，做对1～9题的人数占参加考试人数的82%，65%，92%，93%，68%，98%，70%，60%，72%．如果做对5道或5道以上为及格，那么这次考试的及格率至少是多少．
<gadget id="calculator">18 / 100</gadget>
<output>9/50 = around 0.18</output>

<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">8 / 100</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">7 / 100</gadget>
<output>7/100 = around 0.07</output>

<gadget id="calculator">32 / 100</gadget>
<output>8/25 = around 0.32</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">28 / 100</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">(9/50) + (7/20) + (2/25) + (7/100) + (8/25) + (1/50) + (3/10) + (2/5) + (7/25)</gadget>
<output>2</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>