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I’m sorry, my post will be long. I just want to follow the code process
### Inside factorial(10)
fac(10) -> ret 10 * fac(9) -> 10 * 362,880 = **3,628,800**
fac(9) -> ret 9 * fac(8) -> 9 * 40,320 = **362,880**
fac(8) -> ret 8 * fac(7) -> 8 * 5,040 = 40,320
fac(7) -> ret 7 * fac(6) -> 7 * 720 = **5,040**
fac(6) -> ret 6 * fac(5) -> 6 * 120 = **720**
fac(5) -> ret 5 * fac(4) -> 5 * 24 = **120**
fac(4) -> ret 4 * fac(3) -> 4 * 6 = **24**
fac(3) -> ret 3 * fac(2) -> 3 * 2 = **6**
fac(2) -> ret 2 * fac(1) -> 2 * 1 = **2**
fac(1) -> ret 1
### Inside sumOfDigits(3,628,800)
sum = 0 + 0 + 8 + 8 + 2 + 6 + 3
sum = 27
That would be **27**. Again I’m sorry for the long post 😅
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