Let's divide 939644 by 12
We're looking to find how many times 12 goes into 939644.

Advancing to step 1:
If we divide 9 by 12, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 12

Going ahead to step 2:
When dividing 93 by 12, we get 7 with a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 84 from 93 to get 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 12

Advancing to step 3:
The number 12 fits into 99 8 times, leaving a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 78.0
If we take 96 away from 99, we end up with 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 12

Step 4:
The number 12 fits into 36 3 times, leaving a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 783.0
If we subtract 36 from 36, we get 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 12

Moving on to step 5:
If we divide 4 by 12, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 7830.0
If we take 0 away from 4, we end up with 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 12

Advancing to step 6:
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: 78303.0
Subtracting 36 from 44 leaves us 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.

Going ahead to step 7:
If we divide 80 by 12, we get 6 and a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 78303.6
Subtracting 72 from 80 leaves us 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 8:
When dividing 80 by 12, we get 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 78303.66
Subtracting 72 from 80 leaves us 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 final result is 78303.66 with a remainder of 0.008.