The average score of an exam in a certain class is 70 points, among which (3/4) pass, and the average score of the passing students is 80 points, so what is the average score of the failing students?
某班一次考试平均分为70分，其中(3/4)及格，及格的同学均分为80分，那么不及格同学的平均分是多少？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">80 * (3/4)</gadget>
<output>60</output>

<gadget id="calculator">70 - 60</gadget>
<output>10</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">10 / (1/4)</gadget>
<output>40</output>

<result>40</result>