431383 ÷ 86 
Our goal is to divide 431383 by 86.

On to step 1:
When dividing 4 by 86, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 86

Moving on to step 2:
If we divide 43 by 86, we get 0 and a remainder of 43.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Bring next digit (1) of the dividend behind the 43 and repeat the process: 431 / 86

On to step 3:
The number 86 fits into 431 5 times, leaving a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 430 from 431 leaves us with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 86

Advancing to step 4:
The number 86 fits into 13 0 times, leaving a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 50.0
If we take 0 away from 13, we end up with 13.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 86

Moving on to step 5:
138 divided by 86 is 1 with a remainder of 52.
The number 1 becomes the next digit in our result. 
Result so far: 501.0
Deduct 86 from 138 and we're left with 52.
Fetch the next digit (3) from the dividend, attach it to 52 and continue: 523 / 86

Advancing to step 6:
86 can be fit into 523 6 times, resulting in a remainder of 7.
The next digit of our result is 6. 
Result so far: 5016.0
The remainder is 7 after subtracting 516 from 523.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
When dividing 70 by 86, we get 0 with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 5016.0
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 8:
When dividing 700 by 86, we get 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 5016.08
If we take 688 away from 700, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
120 divided by 86 is 1 with a remainder of 34.
The next digit of our result is 1. 
Result so far: 5016.081
The remainder is 34 after subtracting 86 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 10:
The number 86 fits into 340 3 times, leaving a remainder of 82.
The next digit of our result is 3. 
Result so far: 5016.0813
Subtract 258 from 340 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.

Step 11:
The number 86 fits into 820 9 times, leaving a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 5016.08139
The remainder is 46 after subtracting 774 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 12:
The number 86 fits into 460 5 times, leaving a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 5016.081395
If we take 430 away from 460, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 13:
86 goes into 300 3 times with a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 5016.0813953
Subtract 258 from 300 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 14:
86 can be fit into 420 4 times, resulting in a remainder of 76.
The number 4 becomes the next digit in our result. 
Result so far: 5016.08139534
If we take 344 away from 420, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Our division results in 5016.08139534 with a remaining 7.6e-08.