my code

import math
square = [
    [5, 10, 4, 3],
    [20, 5, 10, 7],
    [25, 3, 14, 16],
    [15, 4, 20, 10]
]
realigned_square = [[] for _ in range(len(square))]
print(realigned_square)
for row in square:
    for idx, col in enumerate(row):
        realigned_square[idx].append(col)
print(realigned_square)
for ls in realigned_square[1:]:
    clientsperservice = ls[0]
    prevserv = getserv(ls[1],clientsperservice)
    print([(a-b)/clientsperservice for a, b in zip(ls, ls[1:])])