We look at the division of 7808204 by 390 
We want to divide 7808204 by 390.

On to step 1:
If we divide 7 by 390, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 390

Going ahead to step 2:
The number 390 fits into 78 0 times, leaving a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Grab the next digit (0) from the dividend, add it to 78, then carry on: 780 / 390

Moving on to step 3:
When dividing 780 by 390, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 780 from 780, we get 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 390

Moving on to step 4:
The number 390 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 20.0
If we take 0 away from 8, we end up with 8.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 390

Going ahead to step 5:
390 can be fit into 82 0 times, resulting in a remainder of 82.
The number 0 becomes the next digit in our result. 
Result so far: 200.0
If we take 0 away from 82, we end up with 82.
Grab the next digit (0) from the dividend, add it to 82, then carry on: 820 / 390

Advancing to step 6:
If we divide 820 by 390, we get 2 and a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 2002.0
Subtracting 780 from 820 leaves us with 40.
Include the next digit (4) from the dividend after 40, then repeat: 404 / 390

On to step 7:
If we divide 404 by 390, we get 1 and a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 20021.0
The remainder is 14 after subtracting 390 from 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
390 goes into 140 0 times with a remainder of 140.
Record the quotient 0 as the next digit in the result. 
Result so far: 20021.0
The remainder is 140 after subtracting 0 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 9:
390 goes into 1400 3 times with a remainder of 230.
Put 3 as the next digit of the answer. 
Result so far: 20021.03
If we subtract 1170 from 1400, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 10:
If we divide 2300 by 390, we get 5 and a remainder of 350.
The number 5 becomes the next digit in our result. 
Result so far: 20021.035
Deduct 1950 from 2300 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Step 11:
3500 divided by 390 is 8 with a remainder of 380.
The next digit of our result is 8. 
Result so far: 20021.0358
Deduct 3120 from 3500 and we're left with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Going ahead to step 12:
When dividing 3800 by 390, we get 9 with a remainder of 290.
Write down 9 as next digit of the result. 
Result so far: 20021.03589
If we subtract 3510 from 3800, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 13:
When dividing 2900 by 390, we get 7 with a remainder of 170.
Record the quotient 7 as the next digit in the result. 
Result so far: 20021.035897
Subtract 2730 from 2900 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Going ahead to step 14:
390 goes into 1700 4 times with a remainder of 140.
The number 4 becomes the next digit in our result. 
Result so far: 20021.0358974
Deduct 1560 from 1700 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 15:
The number 390 fits into 1400 3 times, leaving a remainder of 230.
Put 3 as the next digit of the answer. 
Result so far: 20021.03589743
Subtract 1170 from 1400 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

The quotient of the division is 20021.03589743, and the remainder is 2.3e-07.