381900 ÷ 31 
Our goal is to divide 381900 by 31.

Advancing to step 1:
When dividing 3 by 31, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 31

Moving on to step 2:
31 goes into 38 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 31 from 38, we get 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 31

On to step 3:
The number 31 fits into 71 2 times, leaving a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 62 from 71 leaves us with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 31

Going ahead to step 4:
The number 31 fits into 99 3 times, leaving a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 123.0
If we take 93 away from 99, we end up with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 31

Step 5:
The number 31 fits into 60 1 times, leaving a remainder of 29.
The next digit of our result is 1. 
Result so far: 1231.0
Subtracting 31 from 60 leaves us with 29.
Append the next digit (0) from the dividend to 29 and continue with: 290 / 31

Let's proceed to step 6:
290 divided by 31 is 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 12319.0
If we subtract 279 from 290, we get 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 7:
When dividing 110 by 31, we get 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 12319.3
Subtract 93 from 110 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 8:
170 divided by 31 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 12319.35
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 9:
31 can be fit into 150 4 times, resulting in a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 12319.354
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.

Step 10:
31 can be fit into 260 8 times, resulting in a remainder of 12.
The next digit of our result is 8. 
Result so far: 12319.3548
The remainder is 12 after subtracting 248 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
If we divide 120 by 31, we get 3 and a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 12319.35483
Deduct 93 from 120 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 12:
The number 31 fits into 270 8 times, leaving a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 12319.354838
Subtract 248 from 270 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.

On to step 13:
31 can be fit into 220 7 times, resulting in a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 12319.3548387
Subtracting 217 from 220 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 14:
30 divided by 31 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 12319.3548387
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final result is 12319.3548387 with a remainder of 3e-08.