45478 ÷ 9 = 5053 R1
We're going to perform division on 45478 with 9 as the divisor.

Step 1:
9 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 4 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 9

Step 2:
9 goes into 45 5 times with a remainder of 0.
Write down 5 as next digit of of the result. 
Result so far: 5
Subtract 45 from 45 to get 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 9

Step 3:
9 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of of the result. 
Result so far: 50
Subtract 0 from 4 to get 4.
Bring next digit (7) of the dividend behind the 4 and repeat the process: 47 / 9

Step 4:
9 goes into 47 5 times with a remainder of 2.
Write down 5 as next digit of of the result. 
Result so far: 505
Subtract 45 from 47 to get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 9

Step 5:
9 goes into 28 3 times with a remainder of 1.
Write down 3 as next digit of of the result. 
Result so far: 5053
Subtract 27 from 28 to get 1.

The final result is 5053 with a remainder of 1.