162013 ÷ 25 
The aim is to understand the frequency of 25 in 162013.

Step 1:
If we divide 1 by 25, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 25

Let's proceed to step 2:
When dividing 16 by 25, we get 0 with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 16 leaves us with 16.
Grab the next digit (2) from the dividend, add it to 16, then carry on: 162 / 25

Moving on to step 3:
25 goes into 162 6 times with a remainder of 12.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 150 from 162 to get 12.
Fetch the next digit (0) from the dividend, attach it to 12 and continue: 120 / 25

Moving on to step 4:
If we divide 120 by 25, we get 4 and a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 64.0
Subtract 100 from 120 to get 20.
Bring next digit (1) of the dividend behind the 20 and repeat the process: 201 / 25

Moving on to step 5:
When dividing 201 by 25, we get 8 with a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 648.0
If we subtract 200 from 201, we get 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 25

Moving on to step 6:
25 goes into 13 0 times with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 6480.0
Subtract 0 from 13 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 7:
If we divide 130 by 25, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 6480.5
Subtract 125 from 130 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
If we divide 50 by 25, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 6480.52
If we subtract 50 from 50, 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.

Going ahead to step 9:
When dividing 0 by 25, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 6480.52
Subtracting 0 from 0 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.

On to step 10:
The number 25 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 6480.52
Deduct 0 from 0 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.

The final result is 6480.52 with a remainder of 0.0.