No.
To find the remainder when dividing by 9, add the digits together. The remainder when this sum is divided by 9 is the same as the remainder when the original number is divided by 9. (This process can be repeated on the sum.)
4 + 5 + 5 + 4 = 18
1 + 8 = 9
9 is has no remainder when divided by 9,
⇒ 18 has no remainder when divided by 9.
⇒ 4554 has no remainder when divided by 9.
If the summing procedure is repeated until a single digit remains, then this digit is the remainder, unless it is 9 when the remainder is 0. This is known as finding the digital root of the number.
No, because the digits of 4554 finally add up to 9 and 4545/9 = 505
5.3333
3.6667
73.8889
12.3333
506
521.1111
506
No, because the digits of 4554 finally add up to 9 and 4545/9 = 505
65.3333
No, 4,554 divided by 9 is 506 with remainder 0
506
9.875
5.3333
3.6667
73.8889
12.3333