We're dividing 81386533 by 866 
We want to divide 81386533 by 866.

Going ahead to step 1:
866 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 866

Step 2:
866 goes into 81 0 times with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Grab the next digit (3) from the dividend, add it to 81, then carry on: 813 / 866

On to step 3:
If we divide 813 by 866, we get 0 and a remainder of 813.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 813, we end up with 813.
Include the next digit (8) from the dividend after 813, then repeat: 8138 / 866

Going ahead to step 4:
If we divide 8138 by 866, we get 9 and a remainder of 344.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 7794 from 8138, we get 344.
Include the next digit (6) from the dividend after 344, then repeat: 3446 / 866

Let's proceed to step 5:
When dividing 3446 by 866, we get 3 with a remainder of 848.
Put 3 as the next digit of the answer. 
Result so far: 93.0
Subtract 2598 from 3446 to get 848.
Bring next digit (5) of the dividend behind the 848 and repeat the process: 8485 / 866

Let's proceed to step 6:
When dividing 8485 by 866, we get 9 with a remainder of 691.
The next digit of our result is 9. 
Result so far: 939.0
If we subtract 7794 from 8485, we get 691.
Grab the next digit (3) from the dividend, add it to 691, then carry on: 6913 / 866

Moving on to step 7:
866 goes into 6913 7 times with a remainder of 851.
Write down 7 as next digit of the result. 
Result so far: 9397.0
Deduct 6062 from 6913 and we're left with 851.
Include the next digit (3) from the dividend after 851, then repeat: 8513 / 866

On to step 8:
866 can be fit into 8513 9 times, resulting in a remainder of 719.
The number 9 becomes the next digit in our result. 
Result so far: 93979.0
Subtracting 7794 from 8513 leaves us with 719.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7190, and continue the process.

Advancing to step 9:
If we divide 7190 by 866, we get 8 and a remainder of 262.
Put 8 as the next digit of the answer. 
Result so far: 93979.8
Deduct 6928 from 7190 and we're left with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

On to step 10:
The number 866 fits into 2620 3 times, leaving a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 93979.83
Deduct 2598 from 2620 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 11:
The number 866 fits into 220 0 times, leaving a remainder of 220.
The next digit of our result is 0. 
Result so far: 93979.83
If we take 0 away from 220, we end up 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.

Step 12:
866 can be fit into 2200 2 times, resulting in a remainder of 468.
Record the quotient 2 as the next digit in the result. 
Result so far: 93979.8302
The remainder is 468 after subtracting 1732 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Moving on to step 13:
866 can be fit into 4680 5 times, resulting in a remainder of 350.
The next digit of our result is 5. 
Result so far: 93979.83025
Subtracting 4330 from 4680 leaves us with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 14:
866 can be fit into 3500 4 times, resulting in a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 93979.830254
Deduct 3464 from 3500 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 15:
866 goes into 360 0 times with a remainder of 360.
The next digit of our result is 0. 
Result so far: 93979.830254
The remainder is 360 after subtracting 0 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 16:
The number 866 fits into 3600 4 times, leaving a remainder of 136.
The number 4 becomes the next digit in our result. 
Result so far: 93979.83025404
Subtract 3464 from 3600 to get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

The final result is 93979.83025404 with a remainder of 1.36e-07.