Theo can eat 13 cookies, 3 times a day, 20 days each month. How many cookies can he eat in 3 months? Give me reasons, before answering the question

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The total amount of cookies he can eat in a day is 13 x 3 = 39. The total amount of cookies he can eat in a month is 39 x 20 = 780. Therefore, the total amount of cookies he can eat in 3 months is 780 x 3 = 2340. So the final answer is 2340.