We look at the division of 100961 by 81 
Let's see how many times 81 fits into 100961.

Let's proceed to step 1:
If we divide 1 by 81, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 81

On to step 2:
10 divided by 81 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 81

Advancing to step 3:
The number 81 fits into 100 1 times, leaving a remainder of 19.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 81 from 100, we get 19.
Grab the next digit (9) from the dividend, add it to 19, then carry on: 199 / 81

Step 4:
The number 81 fits into 199 2 times, leaving a remainder of 37.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 162 from 199 and we're left with 37.
Take the next digit (6) from the dividend and append it to 37, then repeat: 376 / 81

Going ahead to step 5:
When dividing 376 by 81, we get 4 with a remainder of 52.
The number 4 becomes the next digit in our result. 
Result so far: 124.0
Subtracting 324 from 376 leaves us with 52.
Include the next digit (1) from the dividend after 52, then repeat: 521 / 81

Going ahead to step 6:
If we divide 521 by 81, we get 6 and a remainder of 35.
Put 6 as the next digit of the answer. 
Result so far: 1246.0
Subtracting 486 from 521 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 7:
81 goes into 350 4 times with a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 1246.4
Subtract 324 from 350 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 8:
The number 81 fits into 260 3 times, leaving a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 1246.43
Deduct 243 from 260 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 9:
170 divided by 81 is 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 1246.432
If we subtract 162 from 170, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
If we divide 80 by 81, we get 0 and a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 1246.432
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 11:
81 goes into 800 9 times with a remainder of 71.
The next digit of our result is 9. 
Result so far: 1246.43209
If we take 729 away from 800, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Moving on to step 12:
If we divide 710 by 81, we get 8 and a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 1246.432098
The remainder is 62 after subtracting 648 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 13:
81 goes into 620 7 times with a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 1246.4320987
Deduct 567 from 620 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 14:
The number 81 fits into 530 6 times, leaving a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 1246.43209876
If we subtract 486 from 530, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 1246.43209876, with a leftover of 4.4e-08.