252115 ÷ 16 
The aim is to understand the frequency of 16 in 252115.

On to step 1:
When dividing 2 by 16, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 16

Advancing to step 2:
The number 16 fits into 25 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 16 from 25 to get 9.
Append the next digit (2) from the dividend to 9 and continue with: 92 / 16

Moving on to step 3:
92 divided by 16 is 5 with a remainder of 12.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtracting 80 from 92 leaves us with 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 16

Moving on to step 4:
16 can be fit into 121 7 times, resulting in a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 157.0
The remainder is 9 after subtracting 112 from 121.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 16

On to step 5:
91 divided by 16 is 5 with a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 1575.0
The remainder is 11 after subtracting 80 from 91.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 16

Step 6:
When dividing 115 by 16, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 15757.0
The remainder is 3 after subtracting 112 from 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
16 can be fit into 30 1 times, resulting in a remainder of 14.
The next digit of our result is 1. 
Result so far: 15757.1
The remainder is 14 after subtracting 16 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 8:
16 goes into 140 8 times with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 15757.18
The remainder is 12 after subtracting 128 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
If we divide 120 by 16, we get 7 and a remainder of 8.
The next digit of our result is 7. 
Result so far: 15757.187
Subtract 112 from 120 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.

Let's proceed to step 10:
16 goes into 80 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 15757.1875
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.

Let's proceed to step 11:
16 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15757.1875
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.

Going ahead to step 12:
If we divide 0 by 16, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 15757.1875
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.

The final result is 15757.1875 with a remainder of 0.0.