Let's divide 72103836 by 891
We want to divide 72103836 by 891.

Advancing to step 1:
If we divide 7 by 891, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 891

Moving on to step 2:
891 can be fit into 72 0 times, resulting in a remainder of 72.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 891

Let's proceed to step 3:
The number 891 fits into 721 0 times, leaving a remainder of 721.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 721 and we're left with 721.
Grab the next digit (0) from the dividend, add it to 721, then carry on: 7210 / 891

On to step 4:
The number 891 fits into 7210 8 times, leaving a remainder of 82.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 7128 from 7210 to get 82.
Take the next digit (3) from the dividend and append it to 82, then repeat: 823 / 891

Let's proceed to step 5:
823 divided by 891 is 0 with a remainder of 823.
The number 0 becomes the next digit in our result. 
Result so far: 80.0
Subtract 0 from 823 to get 823.
Include the next digit (8) from the dividend after 823, then repeat: 8238 / 891

Moving on to step 6:
891 goes into 8238 9 times with a remainder of 219.
The number 9 becomes the next digit in our result. 
Result so far: 809.0
Deduct 8019 from 8238 and we're left with 219.
Include the next digit (3) from the dividend after 219, then repeat: 2193 / 891

Step 7:
891 goes into 2193 2 times with a remainder of 411.
The next digit of our result is 2. 
Result so far: 8092.0
Deduct 1782 from 2193 and we're left with 411.
Take the next digit (6) from the dividend and append it to 411, then repeat: 4116 / 891

On to step 8:
When dividing 4116 by 891, we get 4 with a remainder of 552.
Use 4 as the next digit of our solution. 
Result so far: 80924.0
If we take 3564 away from 4116, we end up with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Going ahead to step 9:
891 goes into 5520 6 times with a remainder of 174.
Use 6 as the next digit of our solution. 
Result so far: 80924.6
Deduct 5346 from 5520 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

On to step 10:
891 goes into 1740 1 times with a remainder of 849.
Put 1 as the next digit of the answer. 
Result so far: 80924.61
Deduct 891 from 1740 and we're left with 849.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8490, and continue the process.

Advancing to step 11:
891 goes into 8490 9 times with a remainder of 471.
Write down 9 as next digit of the result. 
Result so far: 80924.619
Subtracting 8019 from 8490 leaves us with 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Moving on to step 12:
891 can be fit into 4710 5 times, resulting in a remainder of 255.
Use 5 as the next digit of our solution. 
Result so far: 80924.6195
If we subtract 4455 from 4710, we get 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Step 13:
If we divide 2550 by 891, we get 2 and a remainder of 768.
Use 2 as the next digit of our solution. 
Result so far: 80924.61952
If we subtract 1782 from 2550, we get 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Step 14:
891 can be fit into 7680 8 times, resulting in a remainder of 552.
Record the quotient 8 as the next digit in the result. 
Result so far: 80924.619528
If we subtract 7128 from 7680, we get 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

On to step 15:
891 can be fit into 5520 6 times, resulting in a remainder of 174.
The next digit of our result is 6. 
Result so far: 80924.6195286
Deduct 5346 from 5520 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 16:
891 can be fit into 1740 1 times, resulting in a remainder of 849.
Use 1 as the next digit of our solution. 
Result so far: 80924.61952861
Subtract 891 from 1740 to get 849.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8490, and continue the process.

The final outcome is 80924.61952861, with a leftover of 8.49e-07.