Let's divide 811503 by 4
We're looking to find how many times 4 goes into 811503.

Let's proceed to step 1:
When dividing 8 by 4, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 8 from 8 and we're left with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 4

On to step 2:
When dividing 1 by 4, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 4

Going ahead to step 3:
4 can be fit into 11 2 times, resulting in a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 202.0
Deduct 8 from 11 and we're left with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 4

Let's proceed to step 4:
4 goes into 35 8 times with a remainder of 3.
The next digit of our result is 8. 
Result so far: 2028.0
Deduct 32 from 35 and we're left with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 4

Going ahead to step 5:
30 divided by 4 is 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 20287.0
Deduct 28 from 30 and we're left with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 4

Advancing to step 6:
If we divide 23 by 4, we get 5 and a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 202875.0
Subtract 20 from 23 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
When dividing 30 by 4, we get 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 202875.7
Subtract 28 from 30 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.

Let's proceed to step 8:
20 divided by 4 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 202875.75
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.

Advancing to step 9:
4 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 202875.75
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 10:
When dividing 0 by 4, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 202875.75
Deduct 0 from 0 and we're left 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.

After the division, we end up with 202875.75 and a remainder of 0.0.