110 is the price that is charged for every time the commercial is aired. 900 is a base price that they charge to air the commercial.
- Anything times(x) 1 is ONE
- Anything times 2 always has an even number at the end
On and On
Here's a picture I got from online.
The simplified answer is 27m^2
Not to seem rude, but you might have better luck in Business. Unless someone here know accounting lol