We look at the division of 411637 by 16 
The aim is to understand the frequency of 16 in 411637.

Advancing to step 1:
16 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 16

On to step 2:
16 goes into 41 2 times with a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 32 from 41 and we're left with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 16

On to step 3:
16 goes into 91 5 times with a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
If we subtract 80 from 91, we get 11.
Take the next digit (6) from the dividend and append it to 11, then repeat: 116 / 16

Going ahead to step 4:
16 goes into 116 7 times with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 257.0
Subtracting 112 from 116 leaves us with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 16

Let's proceed to step 5:
43 divided by 16 is 2 with a remainder of 11.
Put 2 as the next digit of the answer. 
Result so far: 2572.0
Deduct 32 from 43 and we're left with 11.
Include the next digit (7) from the dividend after 11, then repeat: 117 / 16

Let's proceed to step 6:
If we divide 117 by 16, we get 7 and a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 25727.0
If we take 112 away from 117, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
When dividing 50 by 16, we get 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 25727.3
If we take 48 away from 50, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
When dividing 20 by 16, we get 1 with a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 25727.31
If we take 16 away from 20, 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.

On to step 9:
16 goes into 40 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 25727.312
Deduct 32 from 40 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
16 goes into 80 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 25727.3125
If we subtract 80 from 80, we 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.

Step 11:
When dividing 0 by 16, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25727.3125
If we subtract 0 from 0, we 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.

Let's proceed to step 12:
0 divided by 16 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 25727.3125
Subtracting 0 from 0 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.

The final result is 25727.3125 with a remainder of 0.0.