We look at the division of 15972562 by 25 
We want to figure out the number of times 15972562 can be divided by 25.

Going ahead to step 1:
25 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 25

Moving on to step 2:
When dividing 15 by 25, we get 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 25

Advancing to step 3:
The number 25 fits into 159 6 times, leaving a remainder of 9.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 150 from 159 leaves us with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 25

Going ahead to step 4:
25 goes into 97 3 times with a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 63.0
If we subtract 75 from 97, we get 22.
Take the next digit (2) from the dividend and append it to 22, then repeat: 222 / 25

Going ahead to step 5:
25 goes into 222 8 times with a remainder of 22.
The next digit of our result is 8. 
Result so far: 638.0
Subtracting 200 from 222 leaves us with 22.
Grab the next digit (5) from the dividend, add it to 22, then carry on: 225 / 25

Moving on to step 6:
25 goes into 225 9 times with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 6389.0
If we take 225 away from 225, we end up with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 25

On to step 7:
If we divide 6 by 25, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 63890.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 25

Moving on to step 8:
The number 25 fits into 62 2 times, leaving a remainder of 12.
The next digit of our result is 2. 
Result so far: 638902.0
Subtracting 50 from 62 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
120 divided by 25 is 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 638902.4
If we subtract 100 from 120, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
200 divided by 25 is 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 638902.48
Subtracting 200 from 200 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 638902.48
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 12:
If we divide 0 by 25, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 638902.48
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 638902.48 with a remaining 0.0.