We divide 90813157 by 4
We want to divide 90813157 by 4.

Going ahead to 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
Deduct 8 from 9 and we're left with 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 4

Step 2:
If we divide 10 by 4, we get 2 and a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 22.0
The remainder is 2 after subtracting 8 from 10.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 4

Let's proceed to step 3:
28 divided by 4 is 7 with a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 227.0
If we subtract 28 from 28, we get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 4

Step 4:
The number 4 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 2270.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 4

Moving on to step 5:
4 can be fit into 13 3 times, resulting in a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 22703.0
Subtracting 12 from 13 leaves us with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 4

Moving on to step 6:
When dividing 11 by 4, we get 2 with a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 227032.0
Subtracting 8 from 11 leaves us with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 4

Going ahead to step 7:
4 goes into 35 8 times with a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 2270328.0
Deduct 32 from 35 and we're left with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 4

Step 8:
37 divided by 4 is 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 22703289.0
If we take 36 away from 37, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 9:
10 divided by 4 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 22703289.2
Subtract 8 from 10 to 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.

Advancing to step 10:
When dividing 20 by 4, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 22703289.25
If we take 20 away from 20, we end up 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.

Advancing to step 11:
4 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 22703289.25
Subtract 0 from 0 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.

Advancing to step 12:
When dividing 0 by 4, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 22703289.25
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 22703289.25 with a remainder of 0.0.