We look at the division of 20628405 by 486 
Our goal is to divide 20628405 by 486.

Going ahead to step 1:
2 divided by 486 is 0 with 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.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 486

Moving on to step 2:
486 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 20 and we're left with 20.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 486

Step 3:
The number 486 fits into 206 0 times, leaving a remainder of 206.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 206 after subtracting 0 from 206.
Include the next digit (2) from the dividend after 206, then repeat: 2062 / 486

Let's proceed to step 4:
When dividing 2062 by 486, we get 4 with a remainder of 118.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 1944 from 2062 to get 118.
Include the next digit (8) from the dividend after 118, then repeat: 1188 / 486

Advancing to step 5:
The number 486 fits into 1188 2 times, leaving a remainder of 216.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we subtract 972 from 1188, we get 216.
Include the next digit (4) from the dividend after 216, then repeat: 2164 / 486

Let's proceed to step 6:
486 can be fit into 2164 4 times, resulting in a remainder of 220.
The number 4 becomes the next digit in our result. 
Result so far: 424.0
If we take 1944 away from 2164, we end up with 220.
Append the next digit (0) from the dividend to 220 and continue with: 2200 / 486

Step 7:
2200 divided by 486 is 4 with a remainder of 256.
Put 4 as the next digit of the answer. 
Result so far: 4244.0
Subtract 1944 from 2200 to get 256.
Take the next digit (5) from the dividend and append it to 256, then repeat: 2565 / 486

Let's proceed to step 8:
When dividing 2565 by 486, we get 5 with a remainder of 135.
Use 5 as the next digit of our solution. 
Result so far: 42445.0
Deduct 2430 from 2565 and we're left with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Advancing to step 9:
When dividing 1350 by 486, we get 2 with a remainder of 378.
The next digit of our result is 2. 
Result so far: 42445.2
Deduct 972 from 1350 and we're left with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Going ahead to step 10:
The number 486 fits into 3780 7 times, leaving a remainder of 378.
The number 7 becomes the next digit in our result. 
Result so far: 42445.27
Subtracting 3402 from 3780 leaves us with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Advancing to step 11:
The number 486 fits into 3780 7 times, leaving a remainder of 378.
Record the quotient 7 as the next digit in the result. 
Result so far: 42445.277
Subtracting 3402 from 3780 leaves us with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

The final result is 42445.277 with a remainder of 0.0378.