We look at the division of 661429 by 99 
We want to divide 661429 by 99.

Step 1:
The number 99 fits into 6 0 times, leaving 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.
Append the next digit (6) from the dividend to 6 and continue with: 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.
Bring next digit (1) of the dividend behind the 66 and repeat the process: 661 / 99

Advancing to step 3:
99 goes into 661 6 times with a remainder of 67.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we subtract 594 from 661, we get 67.
Grab the next digit (4) from the dividend, add it to 67, then carry on: 674 / 99

On to step 4:
674 divided by 99 is 6 with a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 66.0
Subtracting 594 from 674 leaves us with 80.
Bring next digit (2) of the dividend behind the 80 and repeat the process: 802 / 99

Advancing to step 5:
When dividing 802 by 99, we get 8 with a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 668.0
If we subtract 792 from 802, we get 10.
Include the next digit (9) from the dividend after 10, then repeat: 109 / 99

Going ahead to step 6:
When dividing 109 by 99, we get 1 with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 6681.0
The remainder is 10 after subtracting 99 from 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
100 divided by 99 is 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 6681.1
Subtracting 99 from 100 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.

Moving on to step 8:
10 divided by 99 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 6681.1
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
If we divide 100 by 99, we get 1 and a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 6681.101
Subtracting 99 from 100 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 10:
99 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 6681.101
Deduct 0 from 10 and we're left 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.

Moving on to step 11:
100 divided by 99 is 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 6681.10101
Subtract 99 from 100 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 12:
10 divided by 99 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 6681.10101
Subtracting 0 from 10 leaves us 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.

On to step 13:
99 goes into 100 1 times with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 6681.1010101
Deduct 99 from 100 and we're left 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.

Step 14:
10 divided by 99 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 6681.1010101
Deduct 0 from 10 and we're left 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.

After the division, we end up with 6681.1010101 and a remainder of 1e-08.