19990792 divided by 660 
We're looking to find how many times 660 goes into 19990792.

Step 1:
The number 660 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 660

Moving on to step 2:
When dividing 19 by 660, we get 0 with a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 19 to get 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 660

Step 3:
199 divided by 660 is 0 with a remainder of 199.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 199, we get 199.
Grab the next digit (9) from the dividend, add it to 199, then carry on: 1999 / 660

Moving on to step 4:
The number 660 fits into 1999 3 times, leaving a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 19 after subtracting 1980 from 1999.
Fetch the next digit (0) from the dividend, attach it to 19 and continue: 190 / 660

Moving on to step 5:
If we divide 190 by 660, we get 0 and a remainder of 190.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Subtract 0 from 190 to get 190.
Fetch the next digit (7) from the dividend, attach it to 190 and continue: 1907 / 660

Let's proceed to step 6:
The number 660 fits into 1907 2 times, leaving a remainder of 587.
Use 2 as the next digit of our solution. 
Result so far: 302.0
The remainder is 587 after subtracting 1320 from 1907.
Fetch the next digit (9) from the dividend, attach it to 587 and continue: 5879 / 660

Step 7:
660 can be fit into 5879 8 times, resulting in a remainder of 599.
Write down 8 as next digit of the result. 
Result so far: 3028.0
If we take 5280 away from 5879, we end up with 599.
Fetch the next digit (2) from the dividend, attach it to 599 and continue: 5992 / 660

On to step 8:
If we divide 5992 by 660, we get 9 and a remainder of 52.
The number 9 becomes the next digit in our result. 
Result so far: 30289.0
If we take 5940 away from 5992, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 9:
520 divided by 660 is 0 with a remainder of 520.
Record the quotient 0 as the next digit in the result. 
Result so far: 30289.0
Subtracting 0 from 520 leaves us with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Advancing to step 10:
When dividing 5200 by 660, we get 7 with a remainder of 580.
Put 7 as the next digit of the answer. 
Result so far: 30289.07
If we subtract 4620 from 5200, we get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

On to step 11:
5800 divided by 660 is 8 with a remainder of 520.
The number 8 becomes the next digit in our result. 
Result so far: 30289.078
Deduct 5280 from 5800 and we're left with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Going ahead to step 12:
The number 660 fits into 5200 7 times, leaving a remainder of 580.
The next digit of our result is 7. 
Result so far: 30289.0787
Deduct 4620 from 5200 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Moving on to step 13:
660 can be fit into 5800 8 times, resulting in a remainder of 520.
The next digit of our result is 8. 
Result so far: 30289.07878
If we take 5280 away from 5800, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

On to step 14:
If we divide 5200 by 660, we get 7 and a remainder of 580.
The next digit of our result is 7. 
Result so far: 30289.078787
Subtract 4620 from 5200 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Advancing to step 15:
5800 divided by 660 is 8 with a remainder of 520.
Record the quotient 8 as the next digit in the result. 
Result so far: 30289.0787878
The remainder is 520 after subtracting 5280 from 5800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Advancing to step 16:
5200 divided by 660 is 7 with a remainder of 580.
The next digit of our result is 7. 
Result so far: 30289.07878787
Subtract 4620 from 5200 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

In conclusion, the division gives 30289.07878787 with a balance of 5.8e-07.