Let's divide 12661 by 63
We're looking to find how many times 63 goes into 12661.

On to step 1:
63 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
If we subtract 0 from 1, we get 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 63

Advancing to step 2:
If we divide 12 by 63, we get 0 and a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Fetch the next digit (6) from the dividend, attach it to 12 and continue: 126 / 63

Advancing to step 3:
63 goes into 126 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 126 from 126 leaves us with 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 63

Step 4:
63 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 20.0
If we take 0 away from 6, we end up with 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 63

Advancing to step 5:
61 divided by 63 is 0 with a remainder of 61.
Use 0 as the next digit of our solution. 
Result so far: 200.0
If we take 0 away from 61, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 6:
610 divided by 63 is 9 with a remainder of 43.
The number 9 becomes the next digit in our result. 
Result so far: 200.9
Subtracting 567 from 610 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 7:
If we divide 430 by 63, we get 6 and a remainder of 52.
Write down 6 as next digit of the result. 
Result so far: 200.96
Deduct 378 from 430 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 8:
The number 63 fits into 520 8 times, leaving a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 200.968
If we take 504 away from 520, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 9:
63 goes into 160 2 times with a remainder of 34.
Put 2 as the next digit of the answer. 
Result so far: 200.9682
The remainder is 34 after subtracting 126 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
When dividing 340 by 63, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 200.96825
Deduct 315 from 340 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 11:
The number 63 fits into 250 3 times, leaving a remainder of 61.
Use 3 as the next digit of our solution. 
Result so far: 200.968253
Deduct 189 from 250 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 12:
63 goes into 610 9 times with a remainder of 43.
Use 9 as the next digit of our solution. 
Result so far: 200.9682539
Subtracting 567 from 610 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 13:
If we divide 430 by 63, we get 6 and a remainder of 52.
Put 6 as the next digit of the answer. 
Result so far: 200.96825396
Deduct 378 from 430 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final outcome is 200.96825396, with a leftover of 5.2e-08.