We're dividing 25991578 by 264 
The aim is to understand the frequency of 264 in 25991578.

Advancing to step 1:
The number 264 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 264

Step 2:
25 divided by 264 is 0 with a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Grab the next digit (9) from the dividend, add it to 25, then carry on: 259 / 264

Going ahead to step 3:
If we divide 259 by 264, we get 0 and a remainder of 259.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 259 and we're left with 259.
Fetch the next digit (9) from the dividend, attach it to 259 and continue: 2599 / 264

Step 4:
264 goes into 2599 9 times with a remainder of 223.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 2376 from 2599 to get 223.
Append the next digit (1) from the dividend to 223 and continue with: 2231 / 264

Going ahead to step 5:
If we divide 2231 by 264, we get 8 and a remainder of 119.
Put 8 as the next digit of the answer. 
Result so far: 98.0
If we take 2112 away from 2231, we end up with 119.
Append the next digit (5) from the dividend to 119 and continue with: 1195 / 264

Moving on to step 6:
1195 divided by 264 is 4 with a remainder of 139.
Use 4 as the next digit of our solution. 
Result so far: 984.0
If we subtract 1056 from 1195, we get 139.
Take the next digit (7) from the dividend and append it to 139, then repeat: 1397 / 264

Let's proceed to step 7:
264 goes into 1397 5 times with a remainder of 77.
The number 5 becomes the next digit in our result. 
Result so far: 9845.0
Subtracting 1320 from 1397 leaves us with 77.
Bring next digit (8) of the dividend behind the 77 and repeat the process: 778 / 264

Let's proceed to step 8:
When dividing 778 by 264, we get 2 with a remainder of 250.
The next digit of our result is 2. 
Result so far: 98452.0
Subtracting 528 from 778 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Let's proceed to step 9:
2500 divided by 264 is 9 with a remainder of 124.
Use 9 as the next digit of our solution. 
Result so far: 98452.9
Subtract 2376 from 2500 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Going ahead to step 10:
If we divide 1240 by 264, we get 4 and a remainder of 184.
Use 4 as the next digit of our solution. 
Result so far: 98452.94
If we take 1056 away from 1240, we end up with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Step 11:
The number 264 fits into 1840 6 times, leaving a remainder of 256.
Write down 6 as next digit of the result. 
Result so far: 98452.946
Subtract 1584 from 1840 to get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Step 12:
If we divide 2560 by 264, we get 9 and a remainder of 184.
Write down 9 as next digit of the result. 
Result so far: 98452.9469
The remainder is 184 after subtracting 2376 from 2560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Going ahead to step 13:
264 goes into 1840 6 times with a remainder of 256.
Use 6 as the next digit of our solution. 
Result so far: 98452.94696
Subtracting 1584 from 1840 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

On to step 14:
264 can be fit into 2560 9 times, resulting in a remainder of 184.
Put 9 as the next digit of the answer. 
Result so far: 98452.946969
Subtract 2376 from 2560 to get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Advancing to step 15:
When dividing 1840 by 264, we get 6 with a remainder of 256.
The number 6 becomes the next digit in our result. 
Result so far: 98452.9469696
If we subtract 1584 from 1840, we get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Step 16:
264 goes into 2560 9 times with a remainder of 184.
The number 9 becomes the next digit in our result. 
Result so far: 98452.94696969
If we subtract 2376 from 2560, we get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

After the division, we end up with 98452.94696969 and a remainder of 1.84e-07.