We divide 809563 by 12
Let's see how many times 12 fits into 809563.

On to step 1:
The number 12 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 12

Let's proceed to step 2:
12 can be fit into 80 6 times, resulting in a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 72 from 80 and we're left with 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 12

Advancing to step 3:
89 divided by 12 is 7 with a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 67.0
Subtract 84 from 89 to get 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 12

Step 4:
55 divided by 12 is 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 674.0
The remainder is 7 after subtracting 48 from 55.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 12

Advancing to step 5:
When dividing 76 by 12, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 6746.0
If we subtract 72 from 76, we get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 12

Advancing to step 6:
43 divided by 12 is 3 with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 67463.0
Subtracting 36 from 43 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
When dividing 70 by 12, we get 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 67463.5
If we subtract 60 from 70, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
100 divided by 12 is 8 with a remainder of 4.
The next digit of our result is 8. 
Result so far: 67463.58
Subtracting 96 from 100 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
When dividing 40 by 12, we get 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 67463.583
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 67463.5833
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 67463.5833, with a leftover of 4e-05.