We're dividing 233131 by 86 
We want to figure out the number of times 233131 can be divided by 86.

On to step 1:
2 divided by 86 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 86

Advancing to step 2:
86 can be fit into 23 0 times, resulting in a remainder of 23.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 23 to get 23.
Take the next digit (3) from the dividend and append it to 23, then repeat: 233 / 86

Advancing to step 3:
If we divide 233 by 86, we get 2 and a remainder of 61.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 172 from 233 leaves us with 61.
Include the next digit (1) from the dividend after 61, then repeat: 611 / 86

On to step 4:
611 divided by 86 is 7 with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 27.0
Deduct 602 from 611 and we're left with 9.
Include the next digit (3) from the dividend after 9, then repeat: 93 / 86

Moving on to step 5:
86 goes into 93 1 times with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 271.0
The remainder is 7 after subtracting 86 from 93.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 86

Moving on to step 6:
The number 86 fits into 71 0 times, leaving a remainder of 71.
The next digit of our result is 0. 
Result so far: 2710.0
Subtracting 0 from 71 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 7:
If we divide 710 by 86, we get 8 and a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 2710.8
Subtract 688 from 710 to get 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 8:
86 can be fit into 220 2 times, resulting in a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 2710.82
The remainder is 48 after subtracting 172 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 9:
86 goes into 480 5 times with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 2710.825
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.

Advancing to step 10:
500 divided by 86 is 5 with a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 2710.8255
If we subtract 430 from 500, we get 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 2710.8255 and a remainder of 0.0007.