We look at the division of 789644 by 66 
We want to divide 789644 by 66.

Step 1:
7 divided by 66 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 66

On to step 2:
If we divide 78 by 66, we get 1 and a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 66 away from 78, we end up with 12.
Take the next digit (9) from the dividend and append it to 12, then repeat: 129 / 66

Going ahead to step 3:
66 can be fit into 129 1 times, resulting in a remainder of 63.
The next digit of our result is 1. 
Result so far: 11.0
Subtract 66 from 129 to get 63.
Include the next digit (6) from the dividend after 63, then repeat: 636 / 66

Step 4:
66 goes into 636 9 times with a remainder of 42.
Write down 9 as next digit of the result. 
Result so far: 119.0
Subtract 594 from 636 to get 42.
Fetch the next digit (4) from the dividend, attach it to 42 and continue: 424 / 66

Step 5:
The number 66 fits into 424 6 times, leaving a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 1196.0
If we take 396 away from 424, we end up with 28.
Take the next digit (4) from the dividend and append it to 28, then repeat: 284 / 66

Moving on to step 6:
66 can be fit into 284 4 times, resulting in a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 11964.0
The remainder is 20 after subtracting 264 from 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 7:
66 can be fit into 200 3 times, resulting in a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 11964.3
Deduct 198 from 200 and we're left 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.

Let's proceed to step 8:
20 divided by 66 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 11964.3
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
If we divide 200 by 66, we get 3 and a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 11964.303
If we subtract 198 from 200, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
The number 66 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 11964.303
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
If we divide 200 by 66, we get 3 and a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 11964.30303
The remainder is 2 after subtracting 198 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 12:
The number 66 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 11964.30303
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 13:
When dividing 200 by 66, we get 3 with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 11964.3030303
If we subtract 198 from 200, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 14:
When dividing 20 by 66, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 11964.3030303
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 11964.3030303 with a remaining 2e-08.