13209064 divided by 813 
We want to divide 13209064 by 813.

Step 1:
If we divide 1 by 813, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 813

Advancing to step 2:
813 can be fit into 13 0 times, resulting in a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Take the next digit (2) from the dividend and append it to 13, then repeat: 132 / 813

Going ahead to step 3:
813 can be fit into 132 0 times, resulting in a remainder of 132.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 132 after subtracting 0 from 132.
Bring next digit (0) of the dividend behind the 132 and repeat the process: 1320 / 813

Step 4:
If we divide 1320 by 813, we get 1 and a remainder of 507.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 813 from 1320 and we're left with 507.
Include the next digit (9) from the dividend after 507, then repeat: 5079 / 813

Step 5:
5079 divided by 813 is 6 with a remainder of 201.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtract 4878 from 5079 to get 201.
Append the next digit (0) from the dividend to 201 and continue with: 2010 / 813

On to step 6:
The number 813 fits into 2010 2 times, leaving a remainder of 384.
Record the quotient 2 as the next digit in the result. 
Result so far: 162.0
Subtracting 1626 from 2010 leaves us with 384.
Take the next digit (6) from the dividend and append it to 384, then repeat: 3846 / 813

Moving on to step 7:
The number 813 fits into 3846 4 times, leaving a remainder of 594.
The next digit of our result is 4. 
Result so far: 1624.0
If we take 3252 away from 3846, we end up with 594.
Fetch the next digit (4) from the dividend, attach it to 594 and continue: 5944 / 813

Moving on to step 8:
When dividing 5944 by 813, we get 7 with a remainder of 253.
Write down 7 as next digit of the result. 
Result so far: 16247.0
If we take 5691 away from 5944, we end up with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Advancing to step 9:
If we divide 2530 by 813, we get 3 and a remainder of 91.
The number 3 becomes the next digit in our result. 
Result so far: 16247.3
If we subtract 2439 from 2530, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Going ahead to step 10:
If we divide 910 by 813, we get 1 and a remainder of 97.
Write down 1 as next digit of the result. 
Result so far: 16247.31
If we subtract 813 from 910, we get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Let's proceed to step 11:
970 divided by 813 is 1 with a remainder of 157.
Write down 1 as next digit of the result. 
Result so far: 16247.311
Subtract 813 from 970 to get 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

The final outcome is 16247.311, with a leftover of 0.0157.