We're dividing 398477 by 86 
We're looking to find how many times 86 goes into 398477.

Going ahead 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
If we subtract 0 from 3, we get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 86

Step 2:
If we divide 39 by 86, we get 0 and a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Fetch the next digit (8) from the dividend, attach it to 39 and continue: 398 / 86

Step 3:
398 divided by 86 is 4 with 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.
Grab the next digit (4) from the dividend, add it to 54, then carry on: 544 / 86

Moving on to step 4:
86 goes into 544 6 times with a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 46.0
The remainder is 28 after subtracting 516 from 544.
Append the next digit (7) from the dividend to 28 and continue with: 287 / 86

Moving on to step 5:
If we divide 287 by 86, we get 3 and a remainder of 29.
Write down 3 as next digit of the result. 
Result so far: 463.0
If we take 258 away from 287, we end up with 29.
Append the next digit (7) from the dividend to 29 and continue with: 297 / 86

Advancing to step 6:
297 divided by 86 is 3 with a remainder of 39.
The next digit of our result is 3. 
Result so far: 4633.0
Subtract 258 from 297 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
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: 4633.4
If we subtract 344 from 390, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 8:
460 divided by 86 is 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 4633.45
The remainder is 30 after subtracting 430 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
300 divided by 86 is 3 with a remainder of 42.
The next digit of our result is 3. 
Result so far: 4633.453
If we take 258 away from 300, we end up with 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 10:
86 goes into 420 4 times with a remainder of 76.
The next digit of our result is 4. 
Result so far: 4633.4534
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.

Step 11:
When dividing 760 by 86, we get 8 with a remainder of 72.
The number 8 becomes the next digit in our result. 
Result so far: 4633.45348
Deduct 688 from 760 and we're left 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.

Going ahead to step 12:
86 goes into 720 8 times with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 4633.453488
Deduct 688 from 720 and we're left 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.

The final outcome is 4633.453488, with a leftover of 3.2e-06.