We're dividing 21790502 by 256 
The aim is to understand the frequency of 256 in 21790502.

Advancing to step 1:
When dividing 2 by 256, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 256

Let's proceed to step 2:
When dividing 21 by 256, we get 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (7) from the dividend, attach it to 21 and continue: 217 / 256

Advancing to step 3:
256 goes into 217 0 times with a remainder of 217.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 217, we get 217.
Include the next digit (9) from the dividend after 217, then repeat: 2179 / 256

Advancing to step 4:
2179 divided by 256 is 8 with a remainder of 131.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 2048 from 2179 and we're left with 131.
Append the next digit (0) from the dividend to 131 and continue with: 1310 / 256

On to step 5:
The number 256 fits into 1310 5 times, leaving a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 85.0
Subtracting 1280 from 1310 leaves us with 30.
Grab the next digit (5) from the dividend, add it to 30, then carry on: 305 / 256

Going ahead to step 6:
256 can be fit into 305 1 times, resulting in a remainder of 49.
Use 1 as the next digit of our solution. 
Result so far: 851.0
Subtracting 256 from 305 leaves us with 49.
Include the next digit (0) from the dividend after 49, then repeat: 490 / 256

Moving on to step 7:
The number 256 fits into 490 1 times, leaving a remainder of 234.
The next digit of our result is 1. 
Result so far: 8511.0
If we subtract 256 from 490, we get 234.
Grab the next digit (2) from the dividend, add it to 234, then carry on: 2342 / 256

Going ahead to step 8:
256 can be fit into 2342 9 times, resulting in a remainder of 38.
The next digit of our result is 9. 
Result so far: 85119.0
If we subtract 2304 from 2342, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 9:
When dividing 380 by 256, we get 1 with a remainder of 124.
Put 1 as the next digit of the answer. 
Result so far: 85119.1
If we take 256 away from 380, we end up with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Moving on to step 10:
If we divide 1240 by 256, we get 4 and a remainder of 216.
Use 4 as the next digit of our solution. 
Result so far: 85119.14
Subtract 1024 from 1240 to get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Step 11:
256 can be fit into 2160 8 times, resulting in a remainder of 112.
Use 8 as the next digit of our solution. 
Result so far: 85119.148
Deduct 2048 from 2160 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Let's proceed to step 12:
The number 256 fits into 1120 4 times, leaving a remainder of 96.
Record the quotient 4 as the next digit in the result. 
Result so far: 85119.1484
The remainder is 96 after subtracting 1024 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 13:
256 goes into 960 3 times with a remainder of 192.
The next digit of our result is 3. 
Result so far: 85119.14843
The remainder is 192 after subtracting 768 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Let's proceed to step 14:
1920 divided by 256 is 7 with a remainder of 128.
Put 7 as the next digit of the answer. 
Result so far: 85119.148437
Subtracting 1792 from 1920 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Let's proceed to step 15:
1280 divided by 256 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 85119.1484375
Subtracting 1280 from 1280 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.

Advancing to step 16:
When dividing 0 by 256, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 85119.1484375
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.

After the division, we end up with 85119.1484375 and a remainder of 0.0.