We look at the division of 25209373 by 494 
We want to figure out the number of times 25209373 can be divided by 494.

Advancing to step 1:
2 divided by 494 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 494

Moving on to step 2:
The number 494 fits into 25 0 times, leaving a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Take the next digit (2) from the dividend and append it to 25, then repeat: 252 / 494

Let's proceed to step 3:
494 can be fit into 252 0 times, resulting in a remainder of 252.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 252 and we're left with 252.
Append the next digit (0) from the dividend to 252 and continue with: 2520 / 494

Let's proceed to step 4:
494 goes into 2520 5 times with a remainder of 50.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 2470 from 2520 to get 50.
Fetch the next digit (9) from the dividend, attach it to 50 and continue: 509 / 494

Moving on to step 5:
509 divided by 494 is 1 with a remainder of 15.
The next digit of our result is 1. 
Result so far: 51.0
If we take 494 away from 509, we end up with 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 494

Step 6:
The number 494 fits into 153 0 times, leaving a remainder of 153.
Write down 0 as next digit of the result. 
Result so far: 510.0
If we take 0 away from 153, we end up with 153.
Append the next digit (7) from the dividend to 153 and continue with: 1537 / 494

Going ahead to step 7:
The number 494 fits into 1537 3 times, leaving a remainder of 55.
Write down 3 as next digit of the result. 
Result so far: 5103.0
If we subtract 1482 from 1537, we get 55.
Include the next digit (3) from the dividend after 55, then repeat: 553 / 494

Going ahead to step 8:
The number 494 fits into 553 1 times, leaving a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 51031.0
The remainder is 59 after subtracting 494 from 553.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 9:
If we divide 590 by 494, we get 1 and a remainder of 96.
The number 1 becomes the next digit in our result. 
Result so far: 51031.1
If we take 494 away from 590, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 10:
494 goes into 960 1 times with a remainder of 466.
Record the quotient 1 as the next digit in the result. 
Result so far: 51031.11
If we take 494 away from 960, we end up with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

The final outcome is 51031.11, with a leftover of 0.466.