Let's divide 331204 by 86
Our goal is to divide 331204 by 86.

On to step 1:
3 divided by 86 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 86

Let's proceed to step 2:
When dividing 33 by 86, we get 0 with a remainder of 33.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Bring next digit (1) of the dividend behind the 33 and repeat the process: 331 / 86

Step 3:
If we divide 331 by 86, we get 3 and a remainder of 73.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 258 from 331 leaves us with 73.
Bring next digit (2) of the dividend behind the 73 and repeat the process: 732 / 86

Advancing to step 4:
86 goes into 732 8 times with a remainder of 44.
The next digit of our result is 8. 
Result so far: 38.0
Deduct 688 from 732 and we're left with 44.
Append the next digit (0) from the dividend to 44 and continue with: 440 / 86

Going ahead to step 5:
The number 86 fits into 440 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 385.0
Subtracting 430 from 440 leaves us with 10.
Append the next digit (4) from the dividend to 10 and continue with: 104 / 86

Going ahead to step 6:
The number 86 fits into 104 1 times, leaving a remainder of 18.
The next digit of our result is 1. 
Result so far: 3851.0
If we subtract 86 from 104, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 7:
When dividing 180 by 86, we get 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 3851.2
Subtracting 172 from 180 leaves us 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.

Advancing to step 8:
86 can be fit into 80 0 times, resulting in a remainder of 80.
The next digit of our result is 0. 
Result so far: 3851.2
Subtract 0 from 80 to 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.

Going ahead to step 9:
When dividing 800 by 86, we get 9 with a remainder of 26.
Use 9 as the next digit of our solution. 
Result so far: 3851.209
If we take 774 away from 800, we end up 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.

Moving on to step 10:
86 can be fit into 260 3 times, resulting in a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 3851.2093
Deduct 258 from 260 and we're left 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.

Advancing to step 11:
When dividing 20 by 86, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 3851.2093
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
86 goes into 200 2 times with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 3851.209302
Subtract 172 from 200 to get 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 13:
86 goes into 280 3 times with a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 3851.2093023
Subtracting 258 from 280 leaves us with 22.
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 14:
86 goes into 220 2 times with a remainder of 48.
The next digit of our result is 2. 
Result so far: 3851.20930232
Deduct 172 from 220 and we're left 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.

The final outcome is 3851.20930232, with a leftover of 4.8e-08.