35575389 ÷ 813 
Our goal is to divide 35575389 by 813.

On to step 1:
813 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 813

Let's proceed to step 2:
If we divide 35 by 813, we get 0 and a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Take the next digit (5) from the dividend and append it to 35, then repeat: 355 / 813

Going ahead to step 3:
355 divided by 813 is 0 with a remainder of 355.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 355 leaves us with 355.
Fetch the next digit (7) from the dividend, attach it to 355 and continue: 3557 / 813

Advancing to step 4:
If we divide 3557 by 813, we get 4 and a remainder of 305.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 3252 from 3557 leaves us with 305.
Append the next digit (5) from the dividend to 305 and continue with: 3055 / 813

Let's proceed to step 5:
813 goes into 3055 3 times with a remainder of 616.
Write down 3 as next digit of the result. 
Result so far: 43.0
If we subtract 2439 from 3055, we get 616.
Include the next digit (3) from the dividend after 616, then repeat: 6163 / 813

On to step 6:
6163 divided by 813 is 7 with a remainder of 472.
Record the quotient 7 as the next digit in the result. 
Result so far: 437.0
The remainder is 472 after subtracting 5691 from 6163.
Include the next digit (8) from the dividend after 472, then repeat: 4728 / 813

Step 7:
If we divide 4728 by 813, we get 5 and a remainder of 663.
The next digit of our result is 5. 
Result so far: 4375.0
Subtract 4065 from 4728 to get 663.
Include the next digit (9) from the dividend after 663, then repeat: 6639 / 813

Step 8:
If we divide 6639 by 813, we get 8 and a remainder of 135.
Use 8 as the next digit of our solution. 
Result so far: 43758.0
Subtract 6504 from 6639 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Advancing to step 9:
The number 813 fits into 1350 1 times, leaving a remainder of 537.
The next digit of our result is 1. 
Result so far: 43758.1
Subtracting 813 from 1350 leaves us with 537.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5370, and continue the process.

Advancing to step 10:
813 goes into 5370 6 times with a remainder of 492.
Record the quotient 6 as the next digit in the result. 
Result so far: 43758.16
Deduct 4878 from 5370 and we're left with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Moving on to step 11:
If we divide 4920 by 813, we get 6 and a remainder of 42.
The next digit of our result is 6. 
Result so far: 43758.166
If we take 4878 away from 4920, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final outcome is 43758.166, with a leftover of 0.0042.