We look at the division of 26586897 by 640 
The aim is to understand the frequency of 640 in 26586897.

Let's proceed to step 1:
640 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
Subtract 0 from 2 to get 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 640

Step 2:
640 goes into 26 0 times with a remainder of 26.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 26 and we're left with 26.
Include the next digit (5) from the dividend after 26, then repeat: 265 / 640

Step 3:
The number 640 fits into 265 0 times, leaving a remainder of 265.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 265, we get 265.
Grab the next digit (8) from the dividend, add it to 265, then carry on: 2658 / 640

Going ahead to step 4:
The number 640 fits into 2658 4 times, leaving a remainder of 98.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 2560 from 2658 and we're left with 98.
Take the next digit (6) from the dividend and append it to 98, then repeat: 986 / 640

Going ahead to step 5:
640 goes into 986 1 times with a remainder of 346.
The number 1 becomes the next digit in our result. 
Result so far: 41.0
Subtracting 640 from 986 leaves us with 346.
Fetch the next digit (8) from the dividend, attach it to 346 and continue: 3468 / 640

Moving on to step 6:
640 can be fit into 3468 5 times, resulting in a remainder of 268.
The number 5 becomes the next digit in our result. 
Result so far: 415.0
If we take 3200 away from 3468, we end up with 268.
Take the next digit (9) from the dividend and append it to 268, then repeat: 2689 / 640

Step 7:
2689 divided by 640 is 4 with a remainder of 129.
Put 4 as the next digit of the answer. 
Result so far: 4154.0
The remainder is 129 after subtracting 2560 from 2689.
Bring next digit (7) of the dividend behind the 129 and repeat the process: 1297 / 640

Step 8:
640 goes into 1297 2 times with a remainder of 17.
Write down 2 as next digit of the result. 
Result so far: 41542.0
If we take 1280 away from 1297, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
The number 640 fits into 170 0 times, leaving a remainder of 170.
The number 0 becomes the next digit in our result. 
Result so far: 41542.0
Deduct 0 from 170 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 10:
When dividing 1700 by 640, we get 2 with a remainder of 420.
Use 2 as the next digit of our solution. 
Result so far: 41542.02
Deduct 1280 from 1700 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 11:
4200 divided by 640 is 6 with a remainder of 360.
Write down 6 as next digit of the result. 
Result so far: 41542.026
If we take 3840 away from 4200, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 12:
640 can be fit into 3600 5 times, resulting in a remainder of 400.
Write down 5 as next digit of the result. 
Result so far: 41542.0265
Subtracting 3200 from 3600 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 13:
640 goes into 4000 6 times with a remainder of 160.
Use 6 as the next digit of our solution. 
Result so far: 41542.02656
Deduct 3840 from 4000 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 14:
When dividing 1600 by 640, we get 2 with a remainder of 320.
Write down 2 as next digit of the result. 
Result so far: 41542.026562
If we take 1280 away from 1600, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 15:
640 goes into 3200 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 41542.0265625
The remainder is 0 after subtracting 3200 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 16:
640 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 41542.0265625
If we take 0 away from 0, we end up 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.

Our division results in 41542.0265625 with a remaining 0.0.