There are 1,280 students in the class, and 588 of them passed the exam, of which (1/3) scored 60 points, and the rest failed. What is the failure rate? What is the column
全班1280人，考试中588人合格，其中(1/3)60分，其余不及格，不及格率是多少？列式为多少
<gadget id="calculator">1_280 - 588</gadget>
<output>692</output>

<gadget id="calculator">692 / 1_280</gadget>
<output>173/320 = around 0.540625</output>

<result>173/320 = around 0.540625</result>