15868099 ÷ 256 
The aim is to understand the frequency of 256 in 15868099.

On to step 1:
When dividing 1 by 256, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 256

Advancing to step 2:
The number 256 fits into 15 0 times, leaving a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Take the next digit (8) from the dividend and append it to 15, then repeat: 158 / 256

Going ahead to step 3:
256 goes into 158 0 times with a remainder of 158.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 158 to get 158.
Take the next digit (6) from the dividend and append it to 158, then repeat: 1586 / 256

On to step 4:
When dividing 1586 by 256, we get 6 with a remainder of 50.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 1536 from 1586 to get 50.
Fetch the next digit (8) from the dividend, attach it to 50 and continue: 508 / 256

Let's proceed to step 5:
256 can be fit into 508 1 times, resulting in a remainder of 252.
The next digit of our result is 1. 
Result so far: 61.0
Deduct 256 from 508 and we're left with 252.
Include the next digit (0) from the dividend after 252, then repeat: 2520 / 256

On to step 6:
The number 256 fits into 2520 9 times, leaving a remainder of 216.
Record the quotient 9 as the next digit in the result. 
Result so far: 619.0
If we take 2304 away from 2520, we end up with 216.
Fetch the next digit (9) from the dividend, attach it to 216 and continue: 2169 / 256

On to step 7:
If we divide 2169 by 256, we get 8 and a remainder of 121.
The number 8 becomes the next digit in our result. 
Result so far: 6198.0
The remainder is 121 after subtracting 2048 from 2169.
Fetch the next digit (9) from the dividend, attach it to 121 and continue: 1219 / 256

Step 8:
256 goes into 1219 4 times with a remainder of 195.
Use 4 as the next digit of our solution. 
Result so far: 61984.0
Subtracting 1024 from 1219 leaves us with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Going ahead to step 9:
1950 divided by 256 is 7 with a remainder of 158.
Put 7 as the next digit of the answer. 
Result so far: 61984.7
Subtracting 1792 from 1950 leaves us with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Advancing to step 10:
256 can be fit into 1580 6 times, resulting in a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 61984.76
Subtract 1536 from 1580 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 11:
The number 256 fits into 440 1 times, leaving a remainder of 184.
Write down 1 as next digit of the result. 
Result so far: 61984.761
Subtracting 256 from 440 leaves us 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.

Moving on to step 12:
If we divide 1840 by 256, we get 7 and a remainder of 48.
Write down 7 as next digit of the result. 
Result so far: 61984.7617
Deduct 1792 from 1840 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 13:
256 can be fit into 480 1 times, resulting in a remainder of 224.
Use 1 as the next digit of our solution. 
Result so far: 61984.76171
Subtract 256 from 480 to get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Let's proceed to step 14:
256 goes into 2240 8 times with a remainder of 192.
Write down 8 as next digit of the result. 
Result so far: 61984.761718
If we take 2048 away from 2240, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Step 15:
When dividing 1920 by 256, we get 7 with a remainder of 128.
The next digit of our result is 7. 
Result so far: 61984.7617187
The remainder is 128 after subtracting 1792 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 16:
256 goes into 1280 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 61984.76171875
The remainder is 0 after subtracting 1280 from 1280.
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 61984.76171875, and the remainder is 0.0.