We're dividing 339419 by 81 
We want to divide 339419 by 81.

On to step 1:
If we divide 3 by 81, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 81

Moving on to step 2:
If we divide 33 by 81, we get 0 and a remainder of 33.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 33 after subtracting 0 from 33.
Append the next digit (9) from the dividend to 33 and continue with: 339 / 81

Step 3:
The number 81 fits into 339 4 times, leaving a remainder of 15.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 324 from 339 and we're left with 15.
Fetch the next digit (4) from the dividend, attach it to 15 and continue: 154 / 81

Step 4:
81 can be fit into 154 1 times, resulting in a remainder of 73.
The next digit of our result is 1. 
Result so far: 41.0
Subtract 81 from 154 to get 73.
Grab the next digit (1) from the dividend, add it to 73, then carry on: 731 / 81

On to step 5:
731 divided by 81 is 9 with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 419.0
If we subtract 729 from 731, we get 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 81

On to step 6:
29 divided by 81 is 0 with a remainder of 29.
Use 0 as the next digit of our solution. 
Result so far: 4190.0
Deduct 0 from 29 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 7:
290 divided by 81 is 3 with a remainder of 47.
Write down 3 as next digit of the result. 
Result so far: 4190.3
Deduct 243 from 290 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 8:
81 goes into 470 5 times with a remainder of 65.
The next digit of our result is 5. 
Result so far: 4190.35
Subtracting 405 from 470 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 9:
The number 81 fits into 650 8 times, leaving a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 4190.358
If we subtract 648 from 650, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
81 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 4190.358
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
The number 81 fits into 200 2 times, leaving a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 4190.35802
Deduct 162 from 200 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
If we divide 380 by 81, we get 4 and a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 4190.358024
Subtract 324 from 380 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 13:
81 goes into 560 6 times with a remainder of 74.
The next digit of our result is 6. 
Result so far: 4190.3580246
If we subtract 486 from 560, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 14:
740 divided by 81 is 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 4190.35802469
The remainder is 11 after subtracting 729 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Our division results in 4190.35802469 with a remaining 1.1e-08.