If I read 4 novels with 200 pages each in a month, how many pages of novels will I read in a year?
Since each novel has 200 pages, you read 4*200 = 
<gadget id="calculator">4*200</gadget>
<output>800</output>
800 pages of novels every month.
Since a year has 12 months, you will read 800*12 = 
<gadget id="calculator">800*12</gadget>
<output>9_600</output>
9600 pages in a year.

<result>9_600</result>