31512509 ÷ 254 
We want to figure out the number of times 31512509 can be divided by 254.

Going ahead to step 1:
If we divide 3 by 254, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 254

Going ahead to step 2:
When dividing 31 by 254, we get 0 with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Take the next digit (5) from the dividend and append it to 31, then repeat: 315 / 254

Step 3:
254 goes into 315 1 times with a remainder of 61.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 254 away from 315, we end up with 61.
Include the next digit (1) from the dividend after 61, then repeat: 611 / 254

Step 4:
611 divided by 254 is 2 with a remainder of 103.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 508 from 611 leaves us with 103.
Bring next digit (2) of the dividend behind the 103 and repeat the process: 1032 / 254

Going ahead to step 5:
254 can be fit into 1032 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 124.0
Deduct 1016 from 1032 and we're left with 16.
Fetch the next digit (5) from the dividend, attach it to 16 and continue: 165 / 254

Advancing to step 6:
254 goes into 165 0 times with a remainder of 165.
The next digit of our result is 0. 
Result so far: 1240.0
Deduct 0 from 165 and we're left with 165.
Bring next digit (0) of the dividend behind the 165 and repeat the process: 1650 / 254

On to step 7:
254 goes into 1650 6 times with a remainder of 126.
Put 6 as the next digit of the answer. 
Result so far: 12406.0
If we subtract 1524 from 1650, we get 126.
Append the next digit (9) from the dividend to 126 and continue with: 1269 / 254

Step 8:
254 goes into 1269 4 times with a remainder of 253.
Record the quotient 4 as the next digit in the result. 
Result so far: 124064.0
If we take 1016 away from 1269, we end up with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Step 9:
The number 254 fits into 2530 9 times, leaving a remainder of 244.
The number 9 becomes the next digit in our result. 
Result so far: 124064.9
The remainder is 244 after subtracting 2286 from 2530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Advancing to step 10:
2440 divided by 254 is 9 with a remainder of 154.
Record the quotient 9 as the next digit in the result. 
Result so far: 124064.99
Subtract 2286 from 2440 to get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

In conclusion, the division gives 124064.99 with a balance of 0.154.