We divide 680431 by 31
We want to divide 680431 by 31.

Going ahead to step 1:
31 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 31

On to step 2:
If we divide 68 by 31, we get 2 and a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 6 after subtracting 62 from 68.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 31

Going ahead to step 3:
31 goes into 60 1 times with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtract 31 from 60 to get 29.
Append the next digit (4) from the dividend to 29 and continue with: 294 / 31

Advancing to step 4:
294 divided by 31 is 9 with a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 219.0
Subtracting 279 from 294 leaves us with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 31

Moving on to step 5:
When dividing 153 by 31, we get 4 with a remainder of 29.
The number 4 becomes the next digit in our result. 
Result so far: 2194.0
Subtracting 124 from 153 leaves us with 29.
Include the next digit (1) from the dividend after 29, then repeat: 291 / 31

Let's proceed to step 6:
31 can be fit into 291 9 times, resulting in a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 21949.0
Deduct 279 from 291 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.

Moving on to step 7:
The number 31 fits into 120 3 times, leaving a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 21949.3
Subtracting 93 from 120 leaves us 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.

On to step 8:
The number 31 fits into 270 8 times, leaving a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 21949.38
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.

Step 9:
When dividing 220 by 31, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 21949.387
Subtract 217 from 220 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 10:
31 can be fit into 30 0 times, resulting in a remainder of 30.
The next digit of our result is 0. 
Result so far: 21949.387
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 11:
31 goes into 300 9 times with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 21949.38709
Subtract 279 from 300 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 12:
The number 31 fits into 210 6 times, leaving a remainder of 24.
The next digit of our result is 6. 
Result so far: 21949.387096
If we subtract 186 from 210, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 13:
240 divided by 31 is 7 with a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 21949.3870967
Subtracting 217 from 240 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 14:
When dividing 230 by 31, we get 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 21949.38709677
If we take 217 away from 230, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final result is 21949.38709677 with a remainder of 1.3e-08.