How do I pull a report summary to a Visualforce page as simple plain text results?

I've been searching all over and haven't found a simple solution. All examples are confusing and all code has to be customized beyond my abilities.

Anyone have a simple copy and paste solution? 

I need a formula that calculates how many days are in the current month.

I've been using this: DAY(DATE(YEAR(TODAY()),MONTH(TODAY())+1,1)-1)
till now but it's starting to give me an error: #Error!

HELP!

I need a formula that calculates how many days are in the current month.

I've been using this: DAY(DATE(YEAR(TODAY()),MONTH(TODAY())+1,1)-1)
till now but it's starting to give me an error: #Error!

HELP!

How would you create a Formula field to calculate amount of days in the next month.  So for example the calculation/value of this formula field should equal "31" since next month has 31 days (August).

 

Any help would be great.

 

Thanks.