12499111 ÷ 581 
We want to divide 12499111 by 581.

On to step 1:
581 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 581

Let's proceed to step 2:
581 can be fit into 12 0 times, resulting in a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (4) from the dividend, add it to 12, then carry on: 124 / 581

Moving on to step 3:
The number 581 fits into 124 0 times, leaving a remainder of 124.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 124 to get 124.
Grab the next digit (9) from the dividend, add it to 124, then carry on: 1249 / 581

Moving on to step 4:
581 goes into 1249 2 times with a remainder of 87.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 1162 from 1249 leaves us with 87.
Bring next digit (9) of the dividend behind the 87 and repeat the process: 879 / 581

Moving on to step 5:
879 divided by 581 is 1 with a remainder of 298.
Write down 1 as next digit of the result. 
Result so far: 21.0
If we subtract 581 from 879, we get 298.
Include the next digit (1) from the dividend after 298, then repeat: 2981 / 581

Advancing to step 6:
The number 581 fits into 2981 5 times, leaving a remainder of 76.
Use 5 as the next digit of our solution. 
Result so far: 215.0
The remainder is 76 after subtracting 2905 from 2981.
Bring next digit (1) of the dividend behind the 76 and repeat the process: 761 / 581

Step 7:
The number 581 fits into 761 1 times, leaving a remainder of 180.
The next digit of our result is 1. 
Result so far: 2151.0
Subtract 581 from 761 to get 180.
Take the next digit (1) from the dividend and append it to 180, then repeat: 1801 / 581

Moving on to step 8:
581 goes into 1801 3 times with a remainder of 58.
The number 3 becomes the next digit in our result. 
Result so far: 21513.0
Subtracting 1743 from 1801 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 9:
The number 581 fits into 580 0 times, leaving a remainder of 580.
The next digit of our result is 0. 
Result so far: 21513.0
The remainder is 580 after subtracting 0 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Going ahead to step 10:
581 goes into 5800 9 times with a remainder of 571.
Record the quotient 9 as the next digit in the result. 
Result so far: 21513.09
Subtract 5229 from 5800 to get 571.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5710, and continue the process.

Going ahead to step 11:
The number 581 fits into 5710 9 times, leaving a remainder of 481.
The number 9 becomes the next digit in our result. 
Result so far: 21513.099
Deduct 5229 from 5710 and we're left with 481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4810, and continue the process.

The quotient of the division is 21513.099, and the remainder is 0.0481.