We look at the division of 666139 by 99 
We want to divide 666139 by 99.

Step 1:
99 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 99

On to step 2:
99 can be fit into 66 0 times, resulting in a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Fetch the next digit (6) from the dividend, attach it to 66 and continue: 666 / 99

Moving on to step 3:
99 can be fit into 666 6 times, resulting in a remainder of 72.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 594 from 666 and we're left with 72.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 99

Advancing to step 4:
If we divide 721 by 99, we get 7 and a remainder of 28.
The number 7 becomes the next digit in our result. 
Result so far: 67.0
The remainder is 28 after subtracting 693 from 721.
Grab the next digit (3) from the dividend, add it to 28, then carry on: 283 / 99

On to step 5:
If we divide 283 by 99, we get 2 and a remainder of 85.
Put 2 as the next digit of the answer. 
Result so far: 672.0
Subtracting 198 from 283 leaves us with 85.
Fetch the next digit (9) from the dividend, attach it to 85 and continue: 859 / 99

Advancing to step 6:
99 goes into 859 8 times with a remainder of 67.
The next digit of our result is 8. 
Result so far: 6728.0
Deduct 792 from 859 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 7:
When dividing 670 by 99, we get 6 with a remainder of 76.
Use 6 as the next digit of our solution. 
Result so far: 6728.6
Subtracting 594 from 670 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 8:
When dividing 760 by 99, we get 7 with a remainder of 67.
Put 7 as the next digit of the answer. 
Result so far: 6728.67
Subtracting 693 from 760 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 9:
99 can be fit into 670 6 times, resulting in a remainder of 76.
The number 6 becomes the next digit in our result. 
Result so far: 6728.676
If we subtract 594 from 670, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 10:
99 goes into 760 7 times with a remainder of 67.
The next digit of our result is 7. 
Result so far: 6728.6767
The remainder is 67 after subtracting 693 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 11:
When dividing 670 by 99, we get 6 with a remainder of 76.
Record the quotient 6 as the next digit in the result. 
Result so far: 6728.67676
If we subtract 594 from 670, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

On to step 12:
When dividing 760 by 99, we get 7 with a remainder of 67.
Use 7 as the next digit of our solution. 
Result so far: 6728.676767
If we take 693 away from 760, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 13:
The number 99 fits into 670 6 times, leaving a remainder of 76.
The next digit of our result is 6. 
Result so far: 6728.6767676
Subtract 594 from 670 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 14:
99 goes into 760 7 times with a remainder of 67.
Write down 7 as next digit of the result. 
Result so far: 6728.67676767
If we take 693 away from 760, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

The quotient of the division is 6728.67676767, and the remainder is 6.7e-08.