There are 32 students in a statistics course.  25 percent of the class received an A.  1/4 of the remaining students got either a B or C, and the rest of the students failed.  How many students failed?
A grade:32(.25)=8
32-8=
<gadget id="calculator">32-8</gadget>
<output>24</output>
24 students remaining.
B/C grade:24/4=
<gadget id="calculator">24/4</gadget>
<output>6</output>
6
24-6=
<gadget id="calculator">24-6</gadget>
<output>18</output>
18 students fail.

<result>18</result>