Let's divide 39821660 by 840
Our goal is to divide 39821660 by 840.

Going ahead to step 1:
If we divide 3 by 840, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 840

Moving on to step 2:
840 can be fit into 39 0 times, resulting in a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Grab the next digit (8) from the dividend, add it to 39, then carry on: 398 / 840

On to step 3:
If we divide 398 by 840, we get 0 and a remainder of 398.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 398, we end up with 398.
Bring next digit (2) of the dividend behind the 398 and repeat the process: 3982 / 840

Moving on to step 4:
840 can be fit into 3982 4 times, resulting in a remainder of 622.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 3360 from 3982 leaves us with 622.
Bring next digit (1) of the dividend behind the 622 and repeat the process: 6221 / 840

Going ahead to step 5:
6221 divided by 840 is 7 with a remainder of 341.
Use 7 as the next digit of our solution. 
Result so far: 47.0
If we take 5880 away from 6221, we end up with 341.
Bring next digit (6) of the dividend behind the 341 and repeat the process: 3416 / 840

Step 6:
If we divide 3416 by 840, we get 4 and a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 474.0
If we subtract 3360 from 3416, we get 56.
Take the next digit (6) from the dividend and append it to 56, then repeat: 566 / 840

Moving on to step 7:
840 goes into 566 0 times with a remainder of 566.
Write down 0 as next digit of the result. 
Result so far: 4740.0
Deduct 0 from 566 and we're left with 566.
Grab the next digit (0) from the dividend, add it to 566, then carry on: 5660 / 840

Advancing to step 8:
840 goes into 5660 6 times with a remainder of 620.
The next digit of our result is 6. 
Result so far: 47406.0
If we take 5040 away from 5660, we end up with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

On to step 9:
If we divide 6200 by 840, we get 7 and a remainder of 320.
The number 7 becomes the next digit in our result. 
Result so far: 47406.7
Subtract 5880 from 6200 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 10:
840 can be fit into 3200 3 times, resulting in a remainder of 680.
Put 3 as the next digit of the answer. 
Result so far: 47406.73
If we take 2520 away from 3200, we end up with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Going ahead to step 11:
When dividing 6800 by 840, we get 8 with a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 47406.738
If we take 6720 away from 6800, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 12:
The number 840 fits into 800 0 times, leaving a remainder of 800.
The next digit of our result is 0. 
Result so far: 47406.738
The remainder is 800 after subtracting 0 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Going ahead to step 13:
The number 840 fits into 8000 9 times, leaving a remainder of 440.
Use 9 as the next digit of our solution. 
Result so far: 47406.73809
Subtract 7560 from 8000 to get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 14:
840 can be fit into 4400 5 times, resulting in a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 47406.738095
Deduct 4200 from 4400 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 15:
If we divide 2000 by 840, we get 2 and a remainder of 320.
The number 2 becomes the next digit in our result. 
Result so far: 47406.7380952
If we subtract 1680 from 2000, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 16:
840 can be fit into 3200 3 times, resulting in a remainder of 680.
The number 3 becomes the next digit in our result. 
Result so far: 47406.73809523
Deduct 2520 from 3200 and we're left with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

In conclusion, the division gives 47406.73809523 with a balance of 6.8e-07.