648115 divided by 81 
Let's see how many times 81 fits into 648115.

Advancing to step 1:
If we divide 6 by 81, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 81

Moving on to step 2:
81 goes into 64 0 times with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Bring next digit (8) of the dividend behind the 64 and repeat the process: 648 / 81

Going ahead to step 3:
If we divide 648 by 81, we get 8 and a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 648 from 648 leaves us with 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 81

Let's proceed to step 4:
If we divide 1 by 81, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 80.0
If we take 0 away from 1, we end up with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 81

On to step 5:
81 goes into 11 0 times with a remainder of 11.
The next digit of our result is 0. 
Result so far: 800.0
If we take 0 away from 11, we end up with 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 81

Going ahead to step 6:
115 divided by 81 is 1 with a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 8001.0
The remainder is 34 after subtracting 81 from 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 7:
81 goes into 340 4 times with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 8001.4
Subtract 324 from 340 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
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: 8001.41
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 9:
The number 81 fits into 790 9 times, leaving a remainder of 61.
Put 9 as the next digit of the answer. 
Result so far: 8001.419
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.

Going ahead to step 10:
The number 81 fits into 610 7 times, leaving a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 8001.4197
Deduct 567 from 610 and we're left with 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 11:
When dividing 430 by 81, we get 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 8001.41975
If we subtract 405 from 430, we 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.

Step 12:
81 can be fit into 250 3 times, resulting in a remainder of 7.
The next digit of our result is 3. 
Result so far: 8001.419753
If we take 243 away from 250, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 13:
70 divided by 81 is 0 with a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 8001.419753
If we subtract 0 from 70, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 14:
700 divided by 81 is 8 with a remainder of 52.
The next digit of our result is 8. 
Result so far: 8001.41975308
If we subtract 648 from 700, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 8001.41975308 with a remainder of 5.2e-08.