We divide 390386 by 86
We're looking to find how many times 86 goes into 390386.

Advancing to step 1:
86 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 86

Let's proceed to step 2:
If we divide 39 by 86, we get 0 and a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Include the next digit (0) from the dividend after 39, then repeat: 390 / 86

Step 3:
The number 86 fits into 390 4 times, leaving a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 344 away from 390, we end up with 46.
Grab the next digit (3) from the dividend, add it to 46, then carry on: 463 / 86

Step 4:
If we divide 463 by 86, we get 5 and a remainder of 33.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
If we take 430 away from 463, we end up with 33.
Bring next digit (8) of the dividend behind the 33 and repeat the process: 338 / 86

On to step 5:
86 can be fit into 338 3 times, resulting in a remainder of 80.
The next digit of our result is 3. 
Result so far: 453.0
If we subtract 258 from 338, we get 80.
Take the next digit (6) from the dividend and append it to 80, then repeat: 806 / 86

Advancing to step 6:
When dividing 806 by 86, we get 9 with a remainder of 32.
Use 9 as the next digit of our solution. 
Result so far: 4539.0
The remainder is 32 after subtracting 774 from 806.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 7:
86 can be fit into 320 3 times, resulting in a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 4539.3
If we subtract 258 from 320, we get 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 8:
86 can be fit into 620 7 times, resulting in a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 4539.37
The remainder is 18 after subtracting 602 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 9:
86 can be fit into 180 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 4539.372
Deduct 172 from 180 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
86 goes into 80 0 times with a remainder of 80.
The next digit of our result is 0. 
Result so far: 4539.372
If we subtract 0 from 80, we get 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 11:
800 divided by 86 is 9 with a remainder of 26.
Write down 9 as next digit of the result. 
Result so far: 4539.37209
Deduct 774 from 800 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.

Going ahead to step 12:
260 divided by 86 is 3 with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 4539.372093
The remainder is 2 after subtracting 258 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 13:
86 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 4539.372093
If we subtract 0 from 20, we 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.

Step 14:
86 can be fit into 200 2 times, resulting in a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 4539.37209302
Subtracting 172 from 200 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 4539.37209302 with a remaining 2.8e-08.