51281061 divided by 25 
The aim is to understand the frequency of 25 in 51281061.

Going ahead to step 1:
The number 25 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 25

Let's proceed to step 2:
25 goes into 51 2 times with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 50 away from 51, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 25

Moving on to step 3:
25 goes into 12 0 times with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
Subtracting 0 from 12 leaves us with 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 25

Going ahead to step 4:
If we divide 128 by 25, we get 5 and a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 205.0
The remainder is 3 after subtracting 125 from 128.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 25

Step 5:
The number 25 fits into 31 1 times, leaving a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 2051.0
Subtract 25 from 31 to get 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 25

On to step 6:
The number 25 fits into 60 2 times, leaving a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 20512.0
If we subtract 50 from 60, we get 10.
Grab the next digit (6) from the dividend, add it to 10, then carry on: 106 / 25

On to step 7:
The number 25 fits into 106 4 times, leaving a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 205124.0
If we subtract 100 from 106, we get 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 25

On to step 8:
61 divided by 25 is 2 with a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 2051242.0
If we subtract 50 from 61, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
25 can be fit into 110 4 times, resulting in a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 2051242.4
If we subtract 100 from 110, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
25 goes into 100 4 times with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 2051242.44
If we subtract 100 from 100, we get 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 2051242.44 with a remaining 0.0.