643106 ÷ 12 
Let's see how many times 12 fits into 643106.

Let's proceed to step 1:
When dividing 6 by 12, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 12

Going ahead to step 2:
64 divided by 12 is 5 with a remainder of 4.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 60 from 64 and we're left with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 12

Step 3:
If we divide 43 by 12, we get 3 and a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 53.0
If we take 36 away from 43, we end up with 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 12

Going ahead to step 4:
If we divide 71 by 12, we get 5 and a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 535.0
Subtract 60 from 71 to get 11.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 12

Moving on to step 5:
12 goes into 110 9 times with a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 5359.0
If we subtract 108 from 110, we get 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 12

Going ahead to step 6:
12 goes into 26 2 times with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 53592.0
If we take 24 away from 26, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
When dividing 20 by 12, we get 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 53592.1
Subtract 12 from 20 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
If we divide 80 by 12, we get 6 and a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 53592.16
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
If we divide 80 by 12, we get 6 and a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 53592.166
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The quotient of the division is 53592.166, and the remainder is 0.0008.