We're dividing 25109028 by 509 
We're looking to find how many times 509 goes into 25109028.

Advancing to step 1:
509 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
If we subtract 0 from 2, we get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 509

Advancing to step 2:
When dividing 25 by 509, we get 0 with a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Include the next digit (1) from the dividend after 25, then repeat: 251 / 509

Going ahead to step 3:
If we divide 251 by 509, we get 0 and a remainder of 251.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 251 and we're left with 251.
Fetch the next digit (0) from the dividend, attach it to 251 and continue: 2510 / 509

Moving on to step 4:
If we divide 2510 by 509, we get 4 and a remainder of 474.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 2036 away from 2510, we end up with 474.
Bring next digit (9) of the dividend behind the 474 and repeat the process: 4749 / 509

Going ahead to step 5:
509 can be fit into 4749 9 times, resulting in a remainder of 168.
Write down 9 as next digit of the result. 
Result so far: 49.0
Subtract 4581 from 4749 to get 168.
Include the next digit (0) from the dividend after 168, then repeat: 1680 / 509

Going ahead to step 6:
The number 509 fits into 1680 3 times, leaving a remainder of 153.
Write down 3 as next digit of the result. 
Result so far: 493.0
Subtracting 1527 from 1680 leaves us with 153.
Take the next digit (2) from the dividend and append it to 153, then repeat: 1532 / 509

Going ahead to step 7:
If we divide 1532 by 509, we get 3 and a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 4933.0
Subtracting 1527 from 1532 leaves us with 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 509

Step 8:
58 divided by 509 is 0 with a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 49330.0
The remainder is 58 after subtracting 0 from 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 9:
The number 509 fits into 580 1 times, leaving a remainder of 71.
The number 1 becomes the next digit in our result. 
Result so far: 49330.1
The remainder is 71 after subtracting 509 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Moving on to step 10:
509 can be fit into 710 1 times, resulting in a remainder of 201.
Record the quotient 1 as the next digit in the result. 
Result so far: 49330.11
If we subtract 509 from 710, we get 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

The final outcome is 49330.11, with a leftover of 0.201.