Let's divide 663198 by 99
We want to divide 663198 by 99.

Advancing to step 1:
6 divided by 99 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 99

Moving on to step 2:
99 can be fit into 66 0 times, resulting in a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Take the next digit (3) from the dividend and append it to 66, then repeat: 663 / 99

Advancing to step 3:
If we divide 663 by 99, we get 6 and a remainder of 69.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 69 after subtracting 594 from 663.
Bring next digit (1) of the dividend behind the 69 and repeat the process: 691 / 99

Step 4:
691 divided by 99 is 6 with a remainder of 97.
Write down 6 as next digit of the result. 
Result so far: 66.0
If we take 594 away from 691, we end up with 97.
Bring next digit (9) of the dividend behind the 97 and repeat the process: 979 / 99

On to step 5:
When dividing 979 by 99, we get 9 with a remainder of 88.
Record the quotient 9 as the next digit in the result. 
Result so far: 669.0
If we take 891 away from 979, we end up with 88.
Take the next digit (8) from the dividend and append it to 88, then repeat: 888 / 99

Step 6:
When dividing 888 by 99, we get 8 with a remainder of 96.
The next digit of our result is 8. 
Result so far: 6698.0
If we subtract 792 from 888, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 7:
When dividing 960 by 99, we get 9 with a remainder of 69.
Write down 9 as next digit of the result. 
Result so far: 6698.9
Subtracting 891 from 960 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 8:
If we divide 690 by 99, we get 6 and a remainder of 96.
The next digit of our result is 6. 
Result so far: 6698.96
The remainder is 96 after subtracting 594 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 9:
If we divide 960 by 99, we get 9 and a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 6698.969
If we take 891 away from 960, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 10:
When dividing 690 by 99, we get 6 with a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 6698.9696
If we take 594 away from 690, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 11:
99 can be fit into 960 9 times, resulting in a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 6698.96969
If we take 891 away from 960, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 12:
If we divide 690 by 99, we get 6 and a remainder of 96.
Put 6 as the next digit of the answer. 
Result so far: 6698.969696
Deduct 594 from 690 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 13:
960 divided by 99 is 9 with a remainder of 69.
The next digit of our result is 9. 
Result so far: 6698.9696969
If we take 891 away from 960, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 14:
If we divide 690 by 99, we get 6 and a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 6698.96969696
If we take 594 away from 690, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

The final result is 6698.96969696 with a remainder of 9.6e-08.