We look at the division of 120255 by 31 
We want to divide 120255 by 31.

Let's proceed to step 1:
31 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 31

Moving on to step 2:
31 goes into 12 0 times with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 31

On to step 3:
The number 31 fits into 120 3 times, leaving a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 93 away from 120, we end up with 27.
Fetch the next digit (2) from the dividend, attach it to 27 and continue: 272 / 31

Moving on to step 4:
31 goes into 272 8 times with a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 38.0
Subtracting 248 from 272 leaves us with 24.
Include the next digit (5) from the dividend after 24, then repeat: 245 / 31

Advancing to step 5:
If we divide 245 by 31, we get 7 and a remainder of 28.
Record the quotient 7 as the next digit in the result. 
Result so far: 387.0
The remainder is 28 after subtracting 217 from 245.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 31

Advancing to step 6:
The number 31 fits into 285 9 times, leaving a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 3879.0
The remainder is 6 after subtracting 279 from 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
The number 31 fits into 60 1 times, leaving a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 3879.1
Subtract 31 from 60 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 8:
When dividing 290 by 31, we get 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 3879.19
If we take 279 away from 290, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 9:
When dividing 110 by 31, we get 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 3879.193
Deduct 93 from 110 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 10:
When dividing 170 by 31, we get 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 3879.1935
Subtracting 155 from 170 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 11:
When dividing 150 by 31, we get 4 with a remainder of 26.
The next digit of our result is 4. 
Result so far: 3879.19354
Subtract 124 from 150 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 12:
If we divide 260 by 31, we get 8 and a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 3879.193548
Deduct 248 from 260 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 13:
31 can be fit into 120 3 times, resulting in a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 3879.1935483
Subtract 93 from 120 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 14:
31 goes into 270 8 times with a remainder of 22.
The next digit of our result is 8. 
Result so far: 3879.19354838
Subtracting 248 from 270 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.

The quotient of the division is 3879.19354838, and the remainder is 2.2e-08.