Let's divide 390646 by 86
Let's see how many times 86 fits into 390646.

Step 1:
If we divide 3 by 86, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 86

Going ahead to step 2:
The number 86 fits into 39 0 times, leaving a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Take the next digit (0) from the dividend and append it to 39, then repeat: 390 / 86

Advancing to step 3:
When dividing 390 by 86, we get 4 with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 344 from 390 to get 46.
Bring next digit (6) of the dividend behind the 46 and repeat the process: 466 / 86

Advancing to step 4:
466 divided by 86 is 5 with a remainder of 36.
Put 5 as the next digit of the answer. 
Result so far: 45.0
Subtract 430 from 466 to get 36.
Bring next digit (4) of the dividend behind the 36 and repeat the process: 364 / 86

Let's proceed to step 5:
86 goes into 364 4 times with a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 454.0
The remainder is 20 after subtracting 344 from 364.
Bring next digit (6) of the dividend behind the 20 and repeat the process: 206 / 86

Moving on to step 6:
If we divide 206 by 86, we get 2 and a remainder of 34.
The next digit of our result is 2. 
Result so far: 4542.0
Subtract 172 from 206 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 7:
86 can be fit into 340 3 times, resulting in a remainder of 82.
Record the quotient 3 as the next digit in the result. 
Result so far: 4542.3
If we take 258 away from 340, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 8:
The number 86 fits into 820 9 times, leaving a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 4542.39
Subtracting 774 from 820 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 9:
86 goes into 460 5 times with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 4542.395
If we subtract 430 from 460, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 10:
86 goes into 300 3 times with a remainder of 42.
The next digit of our result is 3. 
Result so far: 4542.3953
If we subtract 258 from 300, we 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 11:
86 can be fit into 420 4 times, resulting in a remainder of 76.
Use 4 as the next digit of our solution. 
Result so far: 4542.39534
Deduct 344 from 420 and we're left 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.

Going ahead to step 12:
86 can be fit into 760 8 times, resulting in a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 4542.395348
Subtracting 688 from 760 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 13:
The number 86 fits into 720 8 times, leaving a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 4542.3953488
Subtracting 688 from 720 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Our division results in 4542.3953488 with a remaining 3.2e-07.