Let's divide 51235 by 25
The aim is to understand the frequency of 25 in 51235.

Advancing to step 1:
The number 25 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 25

Advancing to step 2:
The number 25 fits into 51 2 times, leaving a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 50 from 51, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 25

Step 3:
25 goes into 12 0 times with a remainder of 12.
The next digit of our result is 0. 
Result so far: 20.0
Subtract 0 from 12 to get 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 25

Advancing to step 4:
If we divide 123 by 25, we get 4 and a remainder of 23.
Put 4 as the next digit of the answer. 
Result so far: 204.0
If we take 100 away from 123, we end up with 23.
Fetch the next digit (5) from the dividend, attach it to 23 and continue: 235 / 25

Going ahead to step 5:
25 can be fit into 235 9 times, resulting in a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 2049.0
The remainder is 10 after subtracting 225 from 235.
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 6:
The number 25 fits into 100 4 times, leaving a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 2049.4
Deduct 100 from 100 and we're left 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.

Advancing to step 7:
If we divide 0 by 25, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 2049.4
Subtract 0 from 0 to 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.

Moving on to step 8:
When dividing 0 by 25, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 2049.4
If we subtract 0 from 0, 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.

The quotient of the division is 2049.4, and the remainder is 0.0.