We look at the division of 12596543 by 561 
Let's see how many times 561 fits into 12596543.

Going ahead to step 1:
When dividing 1 by 561, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 561

Advancing to step 2:
The number 561 fits into 12 0 times, leaving 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 (5) from the dividend, add it to 12, then carry on: 125 / 561

Step 3:
If we divide 125 by 561, we get 0 and a remainder of 125.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 125 and we're left with 125.
Bring next digit (9) of the dividend behind the 125 and repeat the process: 1259 / 561

Moving on to step 4:
The number 561 fits into 1259 2 times, leaving a remainder of 137.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 1122 away from 1259, we end up with 137.
Bring next digit (6) of the dividend behind the 137 and repeat the process: 1376 / 561

Going ahead to step 5:
When dividing 1376 by 561, we get 2 with a remainder of 254.
The next digit of our result is 2. 
Result so far: 22.0
Subtracting 1122 from 1376 leaves us with 254.
Bring next digit (5) of the dividend behind the 254 and repeat the process: 2545 / 561

On to step 6:
If we divide 2545 by 561, we get 4 and a remainder of 301.
The next digit of our result is 4. 
Result so far: 224.0
Subtract 2244 from 2545 to get 301.
Fetch the next digit (4) from the dividend, attach it to 301 and continue: 3014 / 561

Advancing to step 7:
The number 561 fits into 3014 5 times, leaving a remainder of 209.
The next digit of our result is 5. 
Result so far: 2245.0
Subtracting 2805 from 3014 leaves us with 209.
Bring next digit (3) of the dividend behind the 209 and repeat the process: 2093 / 561

Going ahead to step 8:
561 goes into 2093 3 times with a remainder of 410.
Use 3 as the next digit of our solution. 
Result so far: 22453.0
Deduct 1683 from 2093 and we're left with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Going ahead to step 9:
4100 divided by 561 is 7 with a remainder of 173.
Use 7 as the next digit of our solution. 
Result so far: 22453.7
If we take 3927 away from 4100, we end up with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Let's proceed to step 10:
If we divide 1730 by 561, we get 3 and a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 22453.73
If we take 1683 away from 1730, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 11:
561 goes into 470 0 times with a remainder of 470.
Put 0 as the next digit of the answer. 
Result so far: 22453.73
Deduct 0 from 470 and we're left with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

On to step 12:
561 goes into 4700 8 times with a remainder of 212.
The next digit of our result is 8. 
Result so far: 22453.7308
If we take 4488 away from 4700, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Advancing to step 13:
2120 divided by 561 is 3 with a remainder of 437.
The number 3 becomes the next digit in our result. 
Result so far: 22453.73083
Subtracting 1683 from 2120 leaves us with 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Moving on to step 14:
561 can be fit into 4370 7 times, resulting in a remainder of 443.
The number 7 becomes the next digit in our result. 
Result so far: 22453.730837
If we take 3927 away from 4370, we end up with 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Moving on to step 15:
When dividing 4430 by 561, we get 7 with a remainder of 503.
Write down 7 as next digit of the result. 
Result so far: 22453.7308377
Subtract 3927 from 4430 to get 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Our division results in 22453.7308377 with a remaining 5.03e-06.