We're dividing 12157358 by 559 
We want to divide 12157358 by 559.

Step 1:
559 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 559

Moving on to step 2:
The number 559 fits into 12 0 times, leaving a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 559

Step 3:
When dividing 121 by 559, we get 0 with a remainder of 121.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 121 leaves us with 121.
Fetch the next digit (5) from the dividend, attach it to 121 and continue: 1215 / 559

Let's proceed to step 4:
559 goes into 1215 2 times with a remainder of 97.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1118 from 1215 leaves us with 97.
Append the next digit (7) from the dividend to 97 and continue with: 977 / 559

Advancing to step 5:
559 goes into 977 1 times with a remainder of 418.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Deduct 559 from 977 and we're left with 418.
Bring next digit (3) of the dividend behind the 418 and repeat the process: 4183 / 559

On to step 6:
4183 divided by 559 is 7 with a remainder of 270.
Put 7 as the next digit of the answer. 
Result so far: 217.0
Subtracting 3913 from 4183 leaves us with 270.
Include the next digit (5) from the dividend after 270, then repeat: 2705 / 559

Let's proceed to step 7:
When dividing 2705 by 559, we get 4 with a remainder of 469.
The number 4 becomes the next digit in our result. 
Result so far: 2174.0
Subtracting 2236 from 2705 leaves us with 469.
Append the next digit (8) from the dividend to 469 and continue with: 4698 / 559

Advancing to step 8:
559 can be fit into 4698 8 times, resulting in a remainder of 226.
The number 8 becomes the next digit in our result. 
Result so far: 21748.0
The remainder is 226 after subtracting 4472 from 4698.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Advancing to step 9:
When dividing 2260 by 559, we get 4 with a remainder of 24.
The next digit of our result is 4. 
Result so far: 21748.4
If we subtract 2236 from 2260, 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.

Step 10:
240 divided by 559 is 0 with a remainder of 240.
Record the quotient 0 as the next digit in the result. 
Result so far: 21748.4
If we subtract 0 from 240, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 11:
559 goes into 2400 4 times with a remainder of 164.
Put 4 as the next digit of the answer. 
Result so far: 21748.404
If we subtract 2236 from 2400, we get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Going ahead to step 12:
559 can be fit into 1640 2 times, resulting in a remainder of 522.
The number 2 becomes the next digit in our result. 
Result so far: 21748.4042
The remainder is 522 after subtracting 1118 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Going ahead to step 13:
559 can be fit into 5220 9 times, resulting in a remainder of 189.
Write down 9 as next digit of the result. 
Result so far: 21748.40429
Deduct 5031 from 5220 and we're left with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Let's proceed to step 14:
559 can be fit into 1890 3 times, resulting in a remainder of 213.
Put 3 as the next digit of the answer. 
Result so far: 21748.404293
Subtracting 1677 from 1890 leaves us with 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

On to step 15:
If we divide 2130 by 559, we get 3 and a remainder of 453.
The next digit of our result is 3. 
Result so far: 21748.4042933
Subtracting 1677 from 2130 leaves us with 453.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4530, and continue the process.

The final outcome is 21748.4042933, with a leftover of 4.53e-06.