We divide 397389 by 86
Let's see how many times 86 fits into 397389.

Going ahead to step 1:
3 divided by 86 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 86

Advancing to step 2:
39 divided by 86 is 0 with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Bring next digit (7) of the dividend behind the 39 and repeat the process: 397 / 86

Advancing to step 3:
If we divide 397 by 86, we get 4 and a remainder of 53.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 344 from 397 and we're left with 53.
Bring next digit (3) of the dividend behind the 53 and repeat the process: 533 / 86

Step 4:
When dividing 533 by 86, we get 6 with a remainder of 17.
Put 6 as the next digit of the answer. 
Result so far: 46.0
Deduct 516 from 533 and we're left with 17.
Append the next digit (8) from the dividend to 17 and continue with: 178 / 86

Step 5:
178 divided by 86 is 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 462.0
If we subtract 172 from 178, we get 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 86

Going ahead to step 6:
When dividing 69 by 86, we get 0 with a remainder of 69.
Put 0 as the next digit of the answer. 
Result so far: 4620.0
If we take 0 away from 69, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 7:
The number 86 fits into 690 8 times, leaving a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 4620.8
Subtracting 688 from 690 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
The number 86 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 4620.8
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.

Let's proceed to step 9:
86 can be fit into 200 2 times, resulting in a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 4620.802
Deduct 172 from 200 and we're left 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.

Advancing to step 10:
If we divide 280 by 86, we get 3 and a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 4620.8023
The remainder is 22 after subtracting 258 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 11:
When dividing 220 by 86, we get 2 with a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 4620.80232
If we take 172 away from 220, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 12:
If we divide 480 by 86, we get 5 and a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 4620.802325
If we subtract 430 from 480, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 13:
When dividing 500 by 86, we get 5 with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 4620.8023255
If we take 430 away from 500, we end up 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.

After the division, we end up with 4620.8023255 and a remainder of 7e-07.