We're dividing 25189245 by 405 
We want to figure out the number of times 25189245 can be divided by 405.

Going ahead to step 1:
2 divided by 405 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 405

Advancing to step 2:
405 goes into 25 0 times with 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 (1) from the dividend and append it to 25, then repeat: 251 / 405

Step 3:
If we divide 251 by 405, we get 0 and a remainder of 251.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 251 to get 251.
Bring next digit (8) of the dividend behind the 251 and repeat the process: 2518 / 405

Let's proceed to step 4:
The number 405 fits into 2518 6 times, leaving a remainder of 88.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 2430 away from 2518, we end up with 88.
Include the next digit (9) from the dividend after 88, then repeat: 889 / 405

Moving on to step 5:
If we divide 889 by 405, we get 2 and a remainder of 79.
Put 2 as the next digit of the answer. 
Result so far: 62.0
If we take 810 away from 889, we end up with 79.
Include the next digit (2) from the dividend after 79, then repeat: 792 / 405

Going ahead to step 6:
The number 405 fits into 792 1 times, leaving a remainder of 387.
Write down 1 as next digit of the result. 
Result so far: 621.0
Subtract 405 from 792 to get 387.
Fetch the next digit (4) from the dividend, attach it to 387 and continue: 3874 / 405

On to step 7:
405 can be fit into 3874 9 times, resulting in a remainder of 229.
The number 9 becomes the next digit in our result. 
Result so far: 6219.0
If we take 3645 away from 3874, we end up with 229.
Take the next digit (5) from the dividend and append it to 229, then repeat: 2295 / 405

On to step 8:
If we divide 2295 by 405, we get 5 and a remainder of 270.
Put 5 as the next digit of the answer. 
Result so far: 62195.0
Subtracting 2025 from 2295 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 9:
The number 405 fits into 2700 6 times, leaving a remainder of 270.
Put 6 as the next digit of the answer. 
Result so far: 62195.6
If we subtract 2430 from 2700, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

On to step 10:
If we divide 2700 by 405, we get 6 and a remainder of 270.
The number 6 becomes the next digit in our result. 
Result so far: 62195.66
Subtract 2430 from 2700 to get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

The final outcome is 62195.66, with a leftover of 0.27.