Answer:
66
Step-by-step explanation:
Paul: 0, 8, 16, 24, 32, 40, 48, 58, 66 (day 9).
Lorenzo: 10, 17, 24, 31, 38, 45, 52, 59, 66 (day 9).
you could probably make a function that will make it easier to find the answer so you don't have to count to the answer like above but i dont know how lol