Let's divide 6461864 by 81
We want to figure out the number of times 6461864 can be divided by 81.

Step 1:
When dividing 6 by 81, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 81

Advancing to step 2:
If we divide 64 by 81, we get 0 and a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Include the next digit (6) from the dividend after 64, then repeat: 646 / 81

Step 3:
81 goes into 646 7 times with a remainder of 79.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 567 from 646 and we're left with 79.
Include the next digit (1) from the dividend after 79, then repeat: 791 / 81

Advancing to step 4:
The number 81 fits into 791 9 times, leaving a remainder of 62.
The next digit of our result is 9. 
Result so far: 79.0
Subtract 729 from 791 to get 62.
Grab the next digit (8) from the dividend, add it to 62, then carry on: 628 / 81

Advancing to step 5:
81 can be fit into 628 7 times, resulting in a remainder of 61.
Write down 7 as next digit of the result. 
Result so far: 797.0
If we subtract 567 from 628, we get 61.
Append the next digit (6) from the dividend to 61 and continue with: 616 / 81

Advancing to step 6:
When dividing 616 by 81, we get 7 with a remainder of 49.
Record the quotient 7 as the next digit in the result. 
Result so far: 7977.0
Deduct 567 from 616 and we're left with 49.
Grab the next digit (4) from the dividend, add it to 49, then carry on: 494 / 81

Let's proceed to step 7:
81 goes into 494 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 79776.0
Subtract 486 from 494 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 8:
The number 81 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 79776.0
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 9:
800 divided by 81 is 9 with a remainder of 71.
The number 9 becomes the next digit in our result. 
Result so far: 79776.09
Subtracting 729 from 800 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 10:
81 goes into 710 8 times with a remainder of 62.
The next digit of our result is 8. 
Result so far: 79776.098
Subtracting 648 from 710 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 11:
If we divide 620 by 81, we get 7 and a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 79776.0987
Deduct 567 from 620 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 12:
81 goes into 530 6 times with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 79776.09876
Deduct 486 from 530 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 13:
81 goes into 440 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 79776.098765
Subtracting 405 from 440 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 14:
If we divide 350 by 81, we get 4 and a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 79776.0987654
The remainder is 26 after subtracting 324 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 15:
The number 81 fits into 260 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 79776.09876543
If we subtract 243 from 260, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The quotient of the division is 79776.09876543, and the remainder is 1.7e-08.