Brainteaser

Today's brainteaser is a mathematical one. The six clues given contain the numbers you are looking for and also the instructions for using them.

01 Take the number of fingers on both hands.
02 Add the number of blackbirds baked in a pie.
03 Times by one little duck.
04 Deduct the number of partridges in a pear tree.
05 Divide by the 'Wonders of the World'.
06 Add a baker's dozen.

What is the final total?