We're dividing 20479257 by 661 
We want to divide 20479257 by 661.

Step 1:
661 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 661

Going ahead to step 2:
When dividing 20 by 661, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Include the next digit (4) from the dividend after 20, then repeat: 204 / 661

On to step 3:
The number 661 fits into 204 0 times, leaving a remainder of 204.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 204 leaves us with 204.
Append the next digit (7) from the dividend to 204 and continue with: 2047 / 661

Moving on to step 4:
If we divide 2047 by 661, we get 3 and a remainder of 64.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 1983 from 2047, we get 64.
Grab the next digit (9) from the dividend, add it to 64, then carry on: 649 / 661

Moving on to step 5:
If we divide 649 by 661, we get 0 and a remainder of 649.
Write down 0 as next digit of the result. 
Result so far: 30.0
If we subtract 0 from 649, we get 649.
Append the next digit (2) from the dividend to 649 and continue with: 6492 / 661

Let's proceed to step 6:
661 can be fit into 6492 9 times, resulting in a remainder of 543.
Put 9 as the next digit of the answer. 
Result so far: 309.0
If we take 5949 away from 6492, we end up with 543.
Take the next digit (5) from the dividend and append it to 543, then repeat: 5435 / 661

Step 7:
If we divide 5435 by 661, we get 8 and a remainder of 147.
Put 8 as the next digit of the answer. 
Result so far: 3098.0
Subtracting 5288 from 5435 leaves us with 147.
Append the next digit (7) from the dividend to 147 and continue with: 1477 / 661

Step 8:
661 goes into 1477 2 times with a remainder of 155.
Write down 2 as next digit of the result. 
Result so far: 30982.0
If we take 1322 away from 1477, we end up with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Moving on to step 9:
1550 divided by 661 is 2 with a remainder of 228.
The number 2 becomes the next digit in our result. 
Result so far: 30982.2
The remainder is 228 after subtracting 1322 from 1550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Advancing to step 10:
661 can be fit into 2280 3 times, resulting in a remainder of 297.
The number 3 becomes the next digit in our result. 
Result so far: 30982.23
Subtracting 1983 from 2280 leaves us with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Moving on to step 11:
661 goes into 2970 4 times with a remainder of 326.
Record the quotient 4 as the next digit in the result. 
Result so far: 30982.234
If we take 2644 away from 2970, we end up with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Advancing to step 12:
The number 661 fits into 3260 4 times, leaving a remainder of 616.
The number 4 becomes the next digit in our result. 
Result so far: 30982.2344
If we subtract 2644 from 3260, we get 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

After the division, we end up with 30982.2344 and a remainder of 0.00616.