Go to a unit pricing... That will make it easy. I have not made my excel sheets yet... But I will someday

Ex. Unit pricing on a deck would be divided into parts. Like a pier would include: Time to dig, time to mix and pour concrete, and the cost of the concrete, post base, sonotube, post, and hardware for the post including nails. Now if all these cost are added up and put as total price for a post/pier. Then you just look at the plans and enter in how many posts you have on the deck. Continue on with all the other aspects of the project and your ready to go.