86365168 ÷ 81 
We want to figure out the number of times 86365168 can be divided by 81.

Let's proceed to step 1:
When dividing 8 by 81, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 81

Moving on to step 2:
The number 81 fits into 86 1 times, leaving a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 81 from 86 to get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 81

Moving on to step 3:
If we divide 53 by 81, we get 0 and a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 53, we end up with 53.
Append the next digit (6) from the dividend to 53 and continue with: 536 / 81

Moving on to step 4:
536 divided by 81 is 6 with a remainder of 50.
Record the quotient 6 as the next digit in the result. 
Result so far: 106.0
Subtract 486 from 536 to get 50.
Bring next digit (5) of the dividend behind the 50 and repeat the process: 505 / 81

Step 5:
If we divide 505 by 81, we get 6 and a remainder of 19.
Record the quotient 6 as the next digit in the result. 
Result so far: 1066.0
The remainder is 19 after subtracting 486 from 505.
Bring next digit (1) of the dividend behind the 19 and repeat the process: 191 / 81

Advancing to step 6:
81 goes into 191 2 times with a remainder of 29.
Put 2 as the next digit of the answer. 
Result so far: 10662.0
Subtract 162 from 191 to get 29.
Grab the next digit (6) from the dividend, add it to 29, then carry on: 296 / 81

Moving on to step 7:
81 can be fit into 296 3 times, resulting in a remainder of 53.
Put 3 as the next digit of the answer. 
Result so far: 106623.0
Subtracting 243 from 296 leaves us with 53.
Include the next digit (8) from the dividend after 53, then repeat: 538 / 81

Advancing to step 8:
The number 81 fits into 538 6 times, leaving a remainder of 52.
Use 6 as the next digit of our solution. 
Result so far: 1066236.0
If we take 486 away from 538, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 9:
The number 81 fits into 520 6 times, leaving a remainder of 34.
The next digit of our result is 6. 
Result so far: 1066236.6
Deduct 486 from 520 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 10:
81 can be fit into 340 4 times, resulting in a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 1066236.64
Deduct 324 from 340 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
81 can be fit into 160 1 times, resulting in a remainder of 79.
The next digit of our result is 1. 
Result so far: 1066236.641
Subtracting 81 from 160 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 12:
The number 81 fits into 790 9 times, leaving a remainder of 61.
Record the quotient 9 as the next digit in the result. 
Result so far: 1066236.6419
Subtracting 729 from 790 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 13:
The number 81 fits into 610 7 times, leaving a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 1066236.64197
Subtract 567 from 610 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 14:
The number 81 fits into 430 5 times, leaving a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 1066236.641975
Subtract 405 from 430 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 15:
If we divide 250 by 81, we get 3 and a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 1066236.6419753
If we subtract 243 from 250, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 16:
81 goes into 70 0 times with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 1066236.6419753
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The quotient of the division is 1066236.6419753, and the remainder is 7e-08.