Let's divide 321389 by 25
The aim is to understand the frequency of 25 in 321389.

On to step 1:
If we divide 3 by 25, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (2) from the dividend to 3 and continue with: 32 / 25

Moving on to step 2:
25 can be fit into 32 1 times, resulting in a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 25 away from 32, we end up with 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 25

Step 3:
When dividing 71 by 25, we get 2 with a remainder of 21.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 50 from 71, we get 21.
Take the next digit (3) from the dividend and append it to 21, then repeat: 213 / 25

On to step 4:
25 can be fit into 213 8 times, resulting in a remainder of 13.
The next digit of our result is 8. 
Result so far: 128.0
Subtracting 200 from 213 leaves us with 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 25

On to step 5:
The number 25 fits into 138 5 times, leaving a remainder of 13.
The number 5 becomes the next digit in our result. 
Result so far: 1285.0
Subtracting 125 from 138 leaves us with 13.
Fetch the next digit (9) from the dividend, attach it to 13 and continue: 139 / 25

Going ahead to step 6:
25 goes into 139 5 times with a remainder of 14.
Put 5 as the next digit of the answer. 
Result so far: 12855.0
The remainder is 14 after subtracting 125 from 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
140 divided by 25 is 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 12855.5
If we subtract 125 from 140, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
25 can be fit into 150 6 times, resulting in a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 12855.56
Subtract 150 from 150 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.

Advancing to step 9:
25 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 12855.56
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.

Moving on to step 10:
25 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12855.56
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.

The quotient of the division is 12855.56, and the remainder is 0.0.