No no no no no.... ya gotta be able t'add up the price of of two large double doubles, a large ice cap, a small box a bits, and somethin else. Acourse, the real skill comes in when ya have ta figger out what the "somethin else" is over driv-thru speaker when it's -30C and the snow is stingin yer face and then have the correct price by the time ya get ta the pic-up window. And, no, she don't repeat the question, she just says, "Pleasemooshpshshshtssshhhow."