David eats a basket of chocolates and cake that contains #20,000# calories of energy, then regrets it and thinks about how far up a mountain he will need to climb to work off this energy. Can you give him an answer?
That's a little more than a staircase, a little less than a mountain.
I suspect the question meant kilocalories though, since 20,000 of those is more realistic for a basket of chocolate and cake. They are sometimes written as 'Calories' with a capital C.
If it meant kilocalories we need to multiply this answer by 1000, which would make it