We look at the division of 31791648 by 630 
We want to figure out the number of times 31791648 can be divided by 630.

Step 1:
When dividing 3 by 630, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 630

Step 2:
The number 630 fits into 31 0 times, leaving a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Bring next digit (7) of the dividend behind the 31 and repeat the process: 317 / 630

On to step 3:
317 divided by 630 is 0 with a remainder of 317.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 317 to get 317.
Append the next digit (9) from the dividend to 317 and continue with: 3179 / 630

On to step 4:
630 can be fit into 3179 5 times, resulting in a remainder of 29.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 3150 from 3179 and we're left with 29.
Include the next digit (1) from the dividend after 29, then repeat: 291 / 630

Let's proceed to step 5:
630 goes into 291 0 times with a remainder of 291.
The next digit of our result is 0. 
Result so far: 50.0
Subtract 0 from 291 to get 291.
Grab the next digit (6) from the dividend, add it to 291, then carry on: 2916 / 630

Advancing to step 6:
The number 630 fits into 2916 4 times, leaving a remainder of 396.
Write down 4 as next digit of the result. 
Result so far: 504.0
Subtract 2520 from 2916 to get 396.
Bring next digit (4) of the dividend behind the 396 and repeat the process: 3964 / 630

On to step 7:
630 goes into 3964 6 times with a remainder of 184.
Put 6 as the next digit of the answer. 
Result so far: 5046.0
Subtracting 3780 from 3964 leaves us with 184.
Bring next digit (8) of the dividend behind the 184 and repeat the process: 1848 / 630

Advancing to step 8:
630 goes into 1848 2 times with a remainder of 588.
Use 2 as the next digit of our solution. 
Result so far: 50462.0
If we subtract 1260 from 1848, we get 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

Advancing to step 9:
630 can be fit into 5880 9 times, resulting in a remainder of 210.
Use 9 as the next digit of our solution. 
Result so far: 50462.9
If we take 5670 away from 5880, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 10:
If we divide 2100 by 630, we get 3 and a remainder of 210.
Write down 3 as next digit of the result. 
Result so far: 50462.93
Deduct 1890 from 2100 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Moving on to step 11:
If we divide 2100 by 630, we get 3 and a remainder of 210.
Put 3 as the next digit of the answer. 
Result so far: 50462.933
Subtracting 1890 from 2100 leaves us with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

The final outcome is 50462.933, with a leftover of 0.021.