Let's divide 90645 by 4
Our goal is to divide 90645 by 4.

Step 1:
The number 4 fits into 9 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 1 after subtracting 8 from 9.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 4

On to step 2:
10 divided by 4 is 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
The remainder is 2 after subtracting 8 from 10.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 4

Going ahead to step 3:
The number 4 fits into 26 6 times, leaving a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 226.0
If we subtract 24 from 26, we get 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 4

On to step 4:
4 can be fit into 24 6 times, resulting in a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 2266.0
If we take 24 away from 24, we end up with 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 4

On to step 5:
The number 4 fits into 5 1 times, leaving a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 22661.0
If we subtract 4 from 5, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 6:
4 goes into 10 2 times with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 22661.2
If we subtract 8 from 10, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
If we divide 20 by 4, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 22661.25
Subtract 20 from 20 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
0 divided by 4 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 22661.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
If we divide 0 by 4, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 22661.25
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 22661.25 with a remainder of 0.0.