81391641 ÷ 106 
We want to divide 81391641 by 106.

Let's proceed to step 1:
The number 106 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 106

On to step 2:
The number 106 fits into 81 0 times, leaving a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Take the next digit (3) from the dividend and append it to 81, then repeat: 813 / 106

Let's proceed to step 3:
When dividing 813 by 106, we get 7 with a remainder of 71.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 742 from 813, we get 71.
Fetch the next digit (9) from the dividend, attach it to 71 and continue: 719 / 106

Advancing to step 4:
The number 106 fits into 719 6 times, leaving a remainder of 83.
The next digit of our result is 6. 
Result so far: 76.0
Subtracting 636 from 719 leaves us with 83.
Take the next digit (1) from the dividend and append it to 83, then repeat: 831 / 106

Step 5:
The number 106 fits into 831 7 times, leaving a remainder of 89.
Record the quotient 7 as the next digit in the result. 
Result so far: 767.0
The remainder is 89 after subtracting 742 from 831.
Append the next digit (6) from the dividend to 89 and continue with: 896 / 106

Advancing to step 6:
106 goes into 896 8 times with a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 7678.0
Subtract 848 from 896 to get 48.
Grab the next digit (4) from the dividend, add it to 48, then carry on: 484 / 106

Going ahead to step 7:
If we divide 484 by 106, we get 4 and a remainder of 60.
The number 4 becomes the next digit in our result. 
Result so far: 76784.0
If we take 424 away from 484, we end up with 60.
Append the next digit (1) from the dividend to 60 and continue with: 601 / 106

Going ahead to step 8:
The number 106 fits into 601 5 times, leaving a remainder of 71.
Use 5 as the next digit of our solution. 
Result so far: 767845.0
If we subtract 530 from 601, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 9:
When dividing 710 by 106, we get 6 with a remainder of 74.
Put 6 as the next digit of the answer. 
Result so far: 767845.6
If we take 636 away from 710, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 10:
The number 106 fits into 740 6 times, leaving a remainder of 104.
The number 6 becomes the next digit in our result. 
Result so far: 767845.66
Subtract 636 from 740 to get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

The final outcome is 767845.66, with a leftover of 0.104.