72810103 ÷ 820 
We want to divide 72810103 by 820.

Advancing to step 1:
820 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 820

Going ahead to step 2:
If we divide 72 by 820, we get 0 and a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Append the next digit (8) from the dividend to 72 and continue with: 728 / 820

Moving on to step 3:
The number 820 fits into 728 0 times, leaving a remainder of 728.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 728, we get 728.
Take the next digit (1) from the dividend and append it to 728, then repeat: 7281 / 820

Going ahead to step 4:
The number 820 fits into 7281 8 times, leaving a remainder of 721.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we take 6560 away from 7281, we end up with 721.
Append the next digit (0) from the dividend to 721 and continue with: 7210 / 820

Going ahead to step 5:
The number 820 fits into 7210 8 times, leaving a remainder of 650.
Use 8 as the next digit of our solution. 
Result so far: 88.0
The remainder is 650 after subtracting 6560 from 7210.
Include the next digit (1) from the dividend after 650, then repeat: 6501 / 820

Moving on to step 6:
820 can be fit into 6501 7 times, resulting in a remainder of 761.
Use 7 as the next digit of our solution. 
Result so far: 887.0
If we subtract 5740 from 6501, we get 761.
Include the next digit (0) from the dividend after 761, then repeat: 7610 / 820

Advancing to step 7:
820 goes into 7610 9 times with a remainder of 230.
Use 9 as the next digit of our solution. 
Result so far: 8879.0
Subtracting 7380 from 7610 leaves us with 230.
Include the next digit (3) from the dividend after 230, then repeat: 2303 / 820

Moving on to step 8:
If we divide 2303 by 820, we get 2 and a remainder of 663.
Write down 2 as next digit of the result. 
Result so far: 88792.0
Subtracting 1640 from 2303 leaves us with 663.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6630, and continue the process.

Going ahead to step 9:
The number 820 fits into 6630 8 times, leaving a remainder of 70.
The number 8 becomes the next digit in our result. 
Result so far: 88792.8
Subtracting 6560 from 6630 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
When dividing 700 by 820, we get 0 with a remainder of 700.
Record the quotient 0 as the next digit in the result. 
Result so far: 88792.8
The remainder is 700 after subtracting 0 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Going ahead to step 11:
The number 820 fits into 7000 8 times, leaving a remainder of 440.
The number 8 becomes the next digit in our result. 
Result so far: 88792.808
If we subtract 6560 from 7000, we 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.

Let's proceed to step 12:
If we divide 4400 by 820, we get 5 and a remainder of 300.
The number 5 becomes the next digit in our result. 
Result so far: 88792.8085
If we take 4100 away from 4400, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 13:
The number 820 fits into 3000 3 times, leaving a remainder of 540.
The number 3 becomes the next digit in our result. 
Result so far: 88792.80853
If we take 2460 away from 3000, we end up with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Going ahead to step 14:
5400 divided by 820 is 6 with a remainder of 480.
Put 6 as the next digit of the answer. 
Result so far: 88792.808536
If we take 4920 away from 5400, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 15:
If we divide 4800 by 820, we get 5 and a remainder of 700.
Write down 5 as next digit of the result. 
Result so far: 88792.8085365
If we take 4100 away from 4800, we end up with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

On to step 16:
The number 820 fits into 7000 8 times, leaving a remainder of 440.
The next digit of our result is 8. 
Result so far: 88792.80853658
If we take 6560 away from 7000, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Our division results in 88792.80853658 with a remaining 4.4e-07.