The problem is that you are reversing the string a few times. The following will do: (defun base8 (n) (let ((t8 (truncate n 8)) (m8 (mod n 8))) (if (= t8 0) (list m8) (append (base8 t8) (list m8))))) EDIT Here's a solution without append, using a helper function.
On average, a kidney weighs approximately 150 to 160 grams and, together, both kidneys weigh about 0.5 percent of total body weight. Usually, the left kidney is slightly larger than the right. These measurements and weights represent the typical ranges of a healthy, adult human kidney.
In the United States the average human body weight is 190.9 lbs (86.6 kg) for men, and 164.0 lbs (74.4 kg) for women. In the U.K. the average body weight for men is 185.2 lbs â¦ (84.0 kg) and 152.1 lbs (69.0 kg).