25597025 divided by 215 
The aim is to understand the frequency of 215 in 25597025.

Moving on to step 1:
215 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 215

Moving on to step 2:
When dividing 25 by 215, we get 0 with a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Bring next digit (5) of the dividend behind the 25 and repeat the process: 255 / 215

Step 3:
If we divide 255 by 215, we get 1 and a remainder of 40.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 215 from 255 leaves us with 40.
Grab the next digit (9) from the dividend, add it to 40, then carry on: 409 / 215

On to step 4:
215 goes into 409 1 times with a remainder of 194.
The next digit of our result is 1. 
Result so far: 11.0
If we take 215 away from 409, we end up with 194.
Include the next digit (7) from the dividend after 194, then repeat: 1947 / 215

Moving on to step 5:
215 can be fit into 1947 9 times, resulting in a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 119.0
Subtracting 1935 from 1947 leaves us with 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 215

On to step 6:
120 divided by 215 is 0 with a remainder of 120.
Write down 0 as next digit of the result. 
Result so far: 1190.0
If we take 0 away from 120, we end up with 120.
Grab the next digit (2) from the dividend, add it to 120, then carry on: 1202 / 215

Advancing to step 7:
215 goes into 1202 5 times with a remainder of 127.
The number 5 becomes the next digit in our result. 
Result so far: 11905.0
If we subtract 1075 from 1202, we get 127.
Take the next digit (5) from the dividend and append it to 127, then repeat: 1275 / 215

Step 8:
215 goes into 1275 5 times with a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 119055.0
If we take 1075 away from 1275, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 9:
215 goes into 2000 9 times with a remainder of 65.
Use 9 as the next digit of our solution. 
Result so far: 119055.9
Deduct 1935 from 2000 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Let's proceed to step 10:
215 goes into 650 3 times with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 119055.93
Subtract 645 from 650 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.

Going ahead to step 11:
50 divided by 215 is 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 119055.93
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 12:
215 can be fit into 500 2 times, resulting in a remainder of 70.
Put 2 as the next digit of the answer. 
Result so far: 119055.9302
Subtract 430 from 500 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 13:
700 divided by 215 is 3 with a remainder of 55.
Record the quotient 3 as the next digit in the result. 
Result so far: 119055.93023
Subtracting 645 from 700 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 14:
215 goes into 550 2 times with a remainder of 120.
Put 2 as the next digit of the answer. 
Result so far: 119055.930232
If we take 430 away from 550, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 15:
If we divide 1200 by 215, we get 5 and a remainder of 125.
Use 5 as the next digit of our solution. 
Result so far: 119055.9302325
The remainder is 125 after subtracting 1075 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 16:
When dividing 1250 by 215, we get 5 with a remainder of 175.
Write down 5 as next digit of the result. 
Result so far: 119055.93023255
Deduct 1075 from 1250 and we're left with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

In conclusion, the division gives 119055.93023255 with a balance of 1.75e-07.