We divide 391035 by 31
Our goal is to divide 391035 by 31.

Step 1:
If we divide 3 by 31, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 31

Moving on to step 2:
The number 31 fits into 39 1 times, leaving a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 8 after subtracting 31 from 39.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 31

On to step 3:
If we divide 81 by 31, we get 2 and a remainder of 19.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 19 after subtracting 62 from 81.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 31

Let's proceed to step 4:
31 can be fit into 190 6 times, resulting in a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 126.0
The remainder is 4 after subtracting 186 from 190.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 31

Step 5:
31 goes into 43 1 times with a remainder of 12.
The next digit of our result is 1. 
Result so far: 1261.0
If we subtract 31 from 43, we get 12.
Bring next digit (5) of the dividend behind the 12 and repeat the process: 125 / 31

Moving on to step 6:
31 can be fit into 125 4 times, resulting in a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 12614.0
Subtract 124 from 125 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
31 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 12614.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
31 goes into 100 3 times with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 12614.03
Deduct 93 from 100 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 9:
When dividing 70 by 31, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 12614.032
If we subtract 62 from 70, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
80 divided by 31 is 2 with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 12614.0322
Subtract 62 from 80 to 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.

After the division, we end up with 12614.0322 and a remainder of 0.00018.