A class composed of 12 girls and 10 boys was sent to the library for their reading class. Their teacher found out that only 5/6 of the girls and 4/5 of the boys are reading. How many students are not reading?
There are 12 x 5/6 = 
<gadget id="calculator">12*5/6</gadget>
<output>10</output>
10 girls who are reading.
So, 12 - 10 = 
<gadget id="calculator">12-10</gadget>
<output>2</output>
2 girls are not reading.
There are 10 x 4/5 = 
<gadget id="calculator">10*4/5</gadget>
<output>8</output>
8 boys who are reading.
So, 10 - 8 = 
<gadget id="calculator">10-8</gadget>
<output>2</output>
2 boys are not reading.
Thus, there are a total of 2 girls + 2 boys = 
<gadget id="calculator">2+2</gadget>
<output>4</output>
4 students who are not reading.

<result>4</result>