We look at the division of 392925 by 31 
We want to figure out the number of times 392925 can be divided by 31.

On to step 1:
When dividing 3 by 31, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 31

Moving on to step 2:
When dividing 39 by 31, we get 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 31 away from 39, we end up with 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 31

On to step 3:
The number 31 fits into 82 2 times, leaving a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 62 from 82 leaves us with 20.
Fetch the next digit (9) from the dividend, attach it to 20 and continue: 209 / 31

Step 4:
The number 31 fits into 209 6 times, leaving a remainder of 23.
Use 6 as the next digit of our solution. 
Result so far: 126.0
Subtracting 186 from 209 leaves us with 23.
Include the next digit (2) from the dividend after 23, then repeat: 232 / 31

Step 5:
If we divide 232 by 31, we get 7 and a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 1267.0
Subtract 217 from 232 to get 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 31

Going ahead to step 6:
If we divide 155 by 31, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 12675.0
If we take 155 away from 155, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
0 divided by 31 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12675.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
0 divided by 31 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12675.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 12675.0 with a remainder of 0.0.