83623991 ÷ 820 
We want to figure out the number of times 83623991 can be divided by 820.

Advancing to step 1:
If we divide 8 by 820, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 820

On to step 2:
83 divided by 820 is 0 with a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 83, we end up with 83.
Bring next digit (6) of the dividend behind the 83 and repeat the process: 836 / 820

Moving on to step 3:
If we divide 836 by 820, we get 1 and a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
If we take 820 away from 836, we end up with 16.
Grab the next digit (2) from the dividend, add it to 16, then carry on: 162 / 820

Going ahead to step 4:
820 goes into 162 0 times with a remainder of 162.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 162 to get 162.
Append the next digit (3) from the dividend to 162 and continue with: 1623 / 820

Step 5:
820 goes into 1623 1 times with a remainder of 803.
The next digit of our result is 1. 
Result so far: 101.0
Deduct 820 from 1623 and we're left with 803.
Include the next digit (9) from the dividend after 803, then repeat: 8039 / 820

On to step 6:
8039 divided by 820 is 9 with a remainder of 659.
The next digit of our result is 9. 
Result so far: 1019.0
Deduct 7380 from 8039 and we're left with 659.
Bring next digit (9) of the dividend behind the 659 and repeat the process: 6599 / 820

Moving on to step 7:
The number 820 fits into 6599 8 times, leaving a remainder of 39.
Use 8 as the next digit of our solution. 
Result so far: 10198.0
The remainder is 39 after subtracting 6560 from 6599.
Grab the next digit (1) from the dividend, add it to 39, then carry on: 391 / 820

Going ahead to step 8:
The number 820 fits into 391 0 times, leaving a remainder of 391.
Write down 0 as next digit of the result. 
Result so far: 101980.0
Deduct 0 from 391 and we're left with 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

Going ahead to step 9:
820 goes into 3910 4 times with a remainder of 630.
Put 4 as the next digit of the answer. 
Result so far: 101980.4
Subtract 3280 from 3910 to get 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Going ahead to step 10:
6300 divided by 820 is 7 with a remainder of 560.
The next digit of our result is 7. 
Result so far: 101980.47
Subtracting 5740 from 6300 leaves us with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Going ahead to step 11:
When dividing 5600 by 820, we get 6 with a remainder of 680.
Use 6 as the next digit of our solution. 
Result so far: 101980.476
The remainder is 680 after subtracting 4920 from 5600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Advancing to step 12:
If we divide 6800 by 820, we get 8 and a remainder of 240.
The number 8 becomes the next digit in our result. 
Result so far: 101980.4768
Subtracting 6560 from 6800 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 13:
2400 divided by 820 is 2 with a remainder of 760.
The number 2 becomes the next digit in our result. 
Result so far: 101980.47682
If we take 1640 away from 2400, we end up with 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Going ahead to step 14:
820 can be fit into 7600 9 times, resulting in a remainder of 220.
Put 9 as the next digit of the answer. 
Result so far: 101980.476829
Subtracting 7380 from 7600 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 15:
820 goes into 2200 2 times with a remainder of 560.
Write down 2 as next digit of the result. 
Result so far: 101980.4768292
If we take 1640 away from 2200, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Advancing to step 16:
The number 820 fits into 5600 6 times, leaving a remainder of 680.
Write down 6 as next digit of the result. 
Result so far: 101980.47682926
Subtracting 4920 from 5600 leaves us 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.

The quotient of the division is 101980.47682926, and the remainder is 6.8e-07.