We look at the division of 615697 by 16 
The aim is to understand the frequency of 16 in 615697.

Advancing to step 1:
16 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 16

Moving on to step 2:
16 goes into 61 3 times with a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 48 from 61 and we're left with 13.
Take the next digit (5) from the dividend and append it to 13, then repeat: 135 / 16

Let's proceed to step 3:
When dividing 135 by 16, we get 8 with a remainder of 7.
Write down 8 as next digit of the result. 
Result so far: 38.0
Subtract 128 from 135 to get 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 16

Advancing to step 4:
76 divided by 16 is 4 with a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 384.0
If we subtract 64 from 76, we get 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 16

Going ahead to step 5:
16 goes into 129 8 times with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 3848.0
The remainder is 1 after subtracting 128 from 129.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 16

Step 6:
16 can be fit into 17 1 times, resulting in a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 38481.0
Subtract 16 from 17 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
The number 16 fits into 10 0 times, leaving a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 38481.0
If we subtract 0 from 10, 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.

Going ahead to step 8:
16 goes into 100 6 times with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 38481.06
Subtracting 96 from 100 leaves us 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.

Step 9:
16 can be fit into 40 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 38481.062
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.

On to step 10:
The number 16 fits into 80 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 38481.0625
Subtract 80 from 80 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.

Step 11:
The number 16 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 38481.0625
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.

Advancing to step 12:
16 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 38481.0625
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 outcome is 38481.0625, with a leftover of 0.0.