20539403 divided by 649 
We want to figure out the number of times 20539403 can be divided by 649.

Advancing to step 1:
649 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 649

Going ahead to step 2:
The number 649 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 649

On to step 3:
205 divided by 649 is 0 with a remainder of 205.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 205 to get 205.
Bring next digit (3) of the dividend behind the 205 and repeat the process: 2053 / 649

Moving on to step 4:
649 can be fit into 2053 3 times, resulting in a remainder of 106.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 1947 from 2053 and we're left with 106.
Append the next digit (9) from the dividend to 106 and continue with: 1069 / 649

On to step 5:
The number 649 fits into 1069 1 times, leaving a remainder of 420.
The next digit of our result is 1. 
Result so far: 31.0
If we subtract 649 from 1069, we get 420.
Bring next digit (4) of the dividend behind the 420 and repeat the process: 4204 / 649

Let's proceed to step 6:
4204 divided by 649 is 6 with a remainder of 310.
Use 6 as the next digit of our solution. 
Result so far: 316.0
Subtract 3894 from 4204 to get 310.
Include the next digit (0) from the dividend after 310, then repeat: 3100 / 649

On to step 7:
If we divide 3100 by 649, we get 4 and a remainder of 504.
Record the quotient 4 as the next digit in the result. 
Result so far: 3164.0
Subtract 2596 from 3100 to get 504.
Fetch the next digit (3) from the dividend, attach it to 504 and continue: 5043 / 649

Advancing to step 8:
When dividing 5043 by 649, we get 7 with a remainder of 500.
Record the quotient 7 as the next digit in the result. 
Result so far: 31647.0
Deduct 4543 from 5043 and we're left with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Moving on to step 9:
5000 divided by 649 is 7 with a remainder of 457.
Write down 7 as next digit of the result. 
Result so far: 31647.7
If we take 4543 away from 5000, we end up with 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Going ahead to step 10:
4570 divided by 649 is 7 with a remainder of 27.
Put 7 as the next digit of the answer. 
Result so far: 31647.77
Subtracting 4543 from 4570 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The quotient of the division is 31647.77, and the remainder is 0.027.