We look at the division of 86341431 by 439 
Our goal is to divide 86341431 by 439.

On to step 1:
When dividing 8 by 439, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 439

Step 2:
If we divide 86 by 439, we get 0 and a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Include the next digit (3) from the dividend after 86, then repeat: 863 / 439

Step 3:
If we divide 863 by 439, we get 1 and a remainder of 424.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 424 after subtracting 439 from 863.
Append the next digit (4) from the dividend to 424 and continue with: 4244 / 439

Going ahead to step 4:
439 can be fit into 4244 9 times, resulting in a remainder of 293.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Subtract 3951 from 4244 to get 293.
Include the next digit (1) from the dividend after 293, then repeat: 2931 / 439

Let's proceed to step 5:
439 goes into 2931 6 times with a remainder of 297.
Put 6 as the next digit of the answer. 
Result so far: 196.0
If we subtract 2634 from 2931, we get 297.
Grab the next digit (4) from the dividend, add it to 297, then carry on: 2974 / 439

Going ahead to step 6:
439 goes into 2974 6 times with a remainder of 340.
Write down 6 as next digit of the result. 
Result so far: 1966.0
If we take 2634 away from 2974, we end up with 340.
Bring next digit (3) of the dividend behind the 340 and repeat the process: 3403 / 439

Step 7:
The number 439 fits into 3403 7 times, leaving a remainder of 330.
The next digit of our result is 7. 
Result so far: 19667.0
If we take 3073 away from 3403, we end up with 330.
Fetch the next digit (1) from the dividend, attach it to 330 and continue: 3301 / 439

Going ahead to step 8:
3301 divided by 439 is 7 with a remainder of 228.
Write down 7 as next digit of the result. 
Result so far: 196677.0
Subtract 3073 from 3301 to get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

On to step 9:
439 goes into 2280 5 times with a remainder of 85.
Write down 5 as next digit of the result. 
Result so far: 196677.5
If we subtract 2195 from 2280, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 10:
439 goes into 850 1 times with a remainder of 411.
Record the quotient 1 as the next digit in the result. 
Result so far: 196677.51
Deduct 439 from 850 and we're left with 411.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4110, and continue the process.

Step 11:
If we divide 4110 by 439, we get 9 and a remainder of 159.
Record the quotient 9 as the next digit in the result. 
Result so far: 196677.519
If we take 3951 away from 4110, we end up with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Let's proceed to step 12:
1590 divided by 439 is 3 with a remainder of 273.
The number 3 becomes the next digit in our result. 
Result so far: 196677.5193
If we take 1317 away from 1590, we end up with 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Moving on to step 13:
439 can be fit into 2730 6 times, resulting in a remainder of 96.
Write down 6 as next digit of the result. 
Result so far: 196677.51936
The remainder is 96 after subtracting 2634 from 2730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 14:
439 can be fit into 960 2 times, resulting in a remainder of 82.
Record the quotient 2 as the next digit in the result. 
Result so far: 196677.519362
Subtract 878 from 960 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 15:
439 can be fit into 820 1 times, resulting in a remainder of 381.
Write down 1 as next digit of the result. 
Result so far: 196677.5193621
If we take 439 away from 820, we end up with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Advancing to step 16:
3810 divided by 439 is 8 with a remainder of 298.
The next digit of our result is 8. 
Result so far: 196677.51936218
Deduct 3512 from 3810 and we're left with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Our division results in 196677.51936218 with a remaining 2.98e-07.