How Can install 336 rectangle adsense code manually?

Question

i want to instal 336 wide rectangle manually .how to add

Answer 1

You can do any of these:

1. Put the code in one of the boxes under Admin>Layout.
2. Add a "basic adsense" widget (bottom of Admin>Layout) and choose the location there.
3. Make an advanced theme and put the code exactly where you want.