is shoeing a miser's horse.
charges ten dollars for his work.
refuses to pay.
says the blacksmith, "there are eight nails in each horse shoe.
horse has four
shoes. There are 32 nails in all.
will ask you to pay
one penny for the first nail, two pennies for the next nail, four
pennies for the next nail, eight pennies for the next nail, sixteen
pennies for the next, etc. until the 32nd nail".
How much did the miser pay?