613905 ÷ 31 
Let's see how many times 31 fits into 613905.

Going ahead to step 1:
When dividing 6 by 31, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 31

Step 2:
If we divide 61 by 31, we get 1 and a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 31 away from 61, we end up with 30.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 31

Moving on to step 3:
The number 31 fits into 303 9 times, leaving a remainder of 24.
Use 9 as the next digit of our solution. 
Result so far: 19.0
If we subtract 279 from 303, we get 24.
Include the next digit (9) from the dividend after 24, then repeat: 249 / 31

Advancing to step 4:
31 can be fit into 249 8 times, resulting in a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 198.0
If we subtract 248 from 249, we get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 31

Advancing to step 5:
When dividing 10 by 31, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 1980.0
Deduct 0 from 10 and we're left with 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 31

On to step 6:
If we divide 105 by 31, we get 3 and a remainder of 12.
The next digit of our result is 3. 
Result so far: 19803.0
Subtract 93 from 105 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 7:
31 can be fit into 120 3 times, resulting in a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 19803.3
If we subtract 93 from 120, we 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.

Let's proceed to step 8:
270 divided by 31 is 8 with a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 19803.38
The remainder is 22 after subtracting 248 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to 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: 19803.387
If we take 217 away from 220, we end up 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.

Let's proceed to step 10:
The number 31 fits into 30 0 times, leaving a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 19803.387
Deduct 0 from 30 and we're left 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.

Step 11:
When dividing 300 by 31, we get 9 with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 19803.38709
The remainder is 21 after subtracting 279 from 300.
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:
31 goes into 210 6 times with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 19803.387096
If we take 186 away from 210, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 13:
When dividing 240 by 31, we get 7 with a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 19803.3870967
If we subtract 217 from 240, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 14:
When dividing 230 by 31, we get 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 19803.38709677
Deduct 217 from 230 and we're left 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.

After the division, we end up with 19803.38709677 and a remainder of 1.3e-08.