Let's divide 398497 by 86
We want to divide 398497 by 86.

Advancing to step 1:
3 divided by 86 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 86

On to step 2:
The number 86 fits into 39 0 times, leaving a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Append the next digit (8) from the dividend to 39 and continue with: 398 / 86

Step 3:
86 can be fit into 398 4 times, resulting in a remainder of 54.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 344 away from 398, we end up with 54.
Bring next digit (4) of the dividend behind the 54 and repeat the process: 544 / 86

Advancing to step 4:
544 divided by 86 is 6 with a remainder of 28.
The next digit of our result is 6. 
Result so far: 46.0
If we subtract 516 from 544, we get 28.
Include the next digit (9) from the dividend after 28, then repeat: 289 / 86

Step 5:
If we divide 289 by 86, we get 3 and a remainder of 31.
Put 3 as the next digit of the answer. 
Result so far: 463.0
Subtracting 258 from 289 leaves us with 31.
Fetch the next digit (7) from the dividend, attach it to 31 and continue: 317 / 86

Step 6:
The number 86 fits into 317 3 times, leaving a remainder of 59.
Use 3 as the next digit of our solution. 
Result so far: 4633.0
The remainder is 59 after subtracting 258 from 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 7:
86 goes into 590 6 times with a remainder of 74.
Write down 6 as next digit of the result. 
Result so far: 4633.6
Subtract 516 from 590 to 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 8:
86 can be fit into 740 8 times, resulting in a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 4633.68
Subtract 688 from 740 to 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.

On to step 9:
86 can be fit into 520 6 times, resulting in a remainder of 4.
The next digit of our result is 6. 
Result so far: 4633.686
If we subtract 516 from 520, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
If we divide 40 by 86, we get 0 and a remainder of 40.
The next digit of our result is 0. 
Result so far: 4633.686
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 11:
The number 86 fits into 400 4 times, leaving a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 4633.68604
If we take 344 away from 400, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 12:
When dividing 560 by 86, we get 6 with a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 4633.686046
If we take 516 away from 560, we end up 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.

On to step 13:
The number 86 fits into 440 5 times, leaving a remainder of 10.
The next digit of our result is 5. 
Result so far: 4633.6860465
Deduct 430 from 440 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 14:
86 goes into 100 1 times with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 4633.68604651
The remainder is 14 after subtracting 86 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Our division results in 4633.68604651 with a remaining 1.4e-08.