840568 divided by 81 
We want to figure out the number of times 840568 can be divided by 81.

Step 1:
81 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 81

On to step 2:
The number 81 fits into 84 1 times, leaving a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 81 from 84 and we're left with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 81

Let's proceed to step 3:
81 goes into 30 0 times with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 30 to get 30.
Take the next digit (5) from the dividend and append it to 30, then repeat: 305 / 81

Going ahead to step 4:
When dividing 305 by 81, we get 3 with a remainder of 62.
Put 3 as the next digit of the answer. 
Result so far: 103.0
If we take 243 away from 305, we end up with 62.
Fetch the next digit (6) from the dividend, attach it to 62 and continue: 626 / 81

Moving on to step 5:
81 can be fit into 626 7 times, resulting in a remainder of 59.
Use 7 as the next digit of our solution. 
Result so far: 1037.0
If we subtract 567 from 626, we get 59.
Bring next digit (8) of the dividend behind the 59 and repeat the process: 598 / 81

Going ahead to step 6:
When dividing 598 by 81, we get 7 with a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 10377.0
Deduct 567 from 598 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 7:
The number 81 fits into 310 3 times, leaving a remainder of 67.
Record the quotient 3 as the next digit in the result. 
Result so far: 10377.3
If we subtract 243 from 310, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 8:
The number 81 fits into 670 8 times, leaving a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 10377.38
If we take 648 away from 670, we end up 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 9:
If we divide 220 by 81, we get 2 and a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 10377.382
Deduct 162 from 220 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 10:
580 divided by 81 is 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 10377.3827
If we take 567 away from 580, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 11:
81 can be fit into 130 1 times, resulting in a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 10377.38271
If we take 81 away from 130, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 12:
The number 81 fits into 490 6 times, leaving a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 10377.382716
Subtract 486 from 490 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 13:
81 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 10377.382716
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 14:
81 can be fit into 400 4 times, resulting in a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 10377.38271604
If we take 324 away from 400, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

After the division, we end up with 10377.38271604 and a remainder of 7.6e-08.