811645 ÷ 12 
We're looking to find how many times 12 goes into 811645.

Step 1:
8 divided by 12 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 12

On to step 2:
The number 12 fits into 81 6 times, leaving a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 72 from 81, we get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 12

Moving on to step 3:
The number 12 fits into 91 7 times, leaving a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 67.0
If we subtract 84 from 91, we get 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 12

Advancing to step 4:
76 divided by 12 is 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 676.0
Subtracting 72 from 76 leaves us with 4.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 12

Going ahead to step 5:
12 can be fit into 44 3 times, resulting in a remainder of 8.
The next digit of our result is 3. 
Result so far: 6763.0
If we take 36 away from 44, we end up with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 12

Advancing to step 6:
When dividing 85 by 12, we get 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 67637.0
Subtracting 84 from 85 leaves us 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 7:
12 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 67637.0
If we take 0 away from 10, we end up with 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:
12 goes into 100 8 times with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 67637.08
If we take 96 away from 100, we end up 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.

Moving on to step 9:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The next digit of our result is 3. 
Result so far: 67637.083
Deduct 36 from 40 and we're left 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.

On to step 10:
12 can be fit into 40 3 times, resulting in a remainder of 4.
The next digit of our result is 3. 
Result so far: 67637.0833
If we take 36 away from 40, we end up 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.

After the division, we end up with 67637.0833 and a remainder of 4e-05.