We divide 409139 by 81
We want to divide 409139 by 81.

Advancing to step 1:
The number 81 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 81

Advancing to step 2:
81 can be fit into 40 0 times, resulting in a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Take the next digit (9) from the dividend and append it to 40, then repeat: 409 / 81

Let's proceed to step 3:
81 can be fit into 409 5 times, resulting in a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtract 405 from 409 to get 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 81

On to step 4:
The number 81 fits into 41 0 times, leaving a remainder of 41.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
The remainder is 41 after subtracting 0 from 41.
Bring next digit (3) of the dividend behind the 41 and repeat the process: 413 / 81

Going ahead to step 5:
If we divide 413 by 81, we get 5 and a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 505.0
If we take 405 away from 413, we end up with 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 81

Advancing to step 6:
89 divided by 81 is 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 5051.0
If we subtract 81 from 89, we 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.

On to step 7:
The number 81 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 5051.0
Deduct 0 from 80 and we're left 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.

On to step 8:
If we divide 800 by 81, we get 9 and a remainder of 71.
The next digit of our result is 9. 
Result so far: 5051.09
If we subtract 729 from 800, 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.

Advancing to step 9:
The number 81 fits into 710 8 times, leaving a remainder of 62.
Write down 8 as next digit of the result. 
Result so far: 5051.098
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.

On to step 10:
620 divided by 81 is 7 with a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 5051.0987
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.

Moving on to step 11:
If we divide 530 by 81, we get 6 and a remainder of 44.
The next digit of our result is 6. 
Result so far: 5051.09876
The remainder is 44 after subtracting 486 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 12:
When dividing 440 by 81, we get 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 5051.098765
Subtract 405 from 440 to get 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 13:
The number 81 fits into 350 4 times, leaving a remainder of 26.
The next digit of our result is 4. 
Result so far: 5051.0987654
Deduct 324 from 350 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 14:
81 goes into 260 3 times with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 5051.09876543
Subtract 243 from 260 to 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 5051.09876543, and the remainder is 1.7e-08.