We look at the division of 810025 by 16 
The aim is to understand the frequency of 16 in 810025.

Moving on to step 1:
If we divide 8 by 16, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 16

Moving on to step 2:
16 can be fit into 81 5 times, resulting in a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 1 after subtracting 80 from 81.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 16

Moving on to step 3:
When dividing 10 by 16, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 50.0
Subtracting 0 from 10 leaves us with 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 16

Moving on to step 4:
If we divide 100 by 16, we get 6 and a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 506.0
Deduct 96 from 100 and we're left with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 16

Going ahead to step 5:
16 can be fit into 42 2 times, resulting in a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 5062.0
The remainder is 10 after subtracting 32 from 42.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 16

On to step 6:
105 divided by 16 is 6 with a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 50626.0
Subtract 96 from 105 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
90 divided by 16 is 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 50626.5
If we subtract 80 from 90, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
When dividing 100 by 16, we get 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 50626.56
If we take 96 away from 100, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
16 can be fit into 40 2 times, resulting in a remainder of 8.
The next digit of our result is 2. 
Result so far: 50626.562
Subtract 32 from 40 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
If we divide 80 by 16, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 50626.5625
Deduct 80 from 80 and we're left 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.

On to step 11:
0 divided by 16 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 50626.5625
Subtract 0 from 0 to get 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 12:
0 divided by 16 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 50626.5625
Deduct 0 from 0 and we're left 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 50626.5625 with a remaining 0.0.