We look at the division of 236223 by 16 
The aim is to understand the frequency of 16 in 236223.

On to step 1:
The number 16 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 16

Let's proceed to step 2:
If we divide 23 by 16, we get 1 and a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 16 from 23 and we're left with 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 16

Advancing to step 3:
16 goes into 76 4 times with a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Deduct 64 from 76 and we're left with 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 16

Step 4:
If we divide 122 by 16, we get 7 and a remainder of 10.
The next digit of our result is 7. 
Result so far: 147.0
If we take 112 away from 122, we end up with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 16

Advancing to step 5:
The number 16 fits into 102 6 times, leaving a remainder of 6.
The next digit of our result is 6. 
Result so far: 1476.0
If we subtract 96 from 102, we get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 16

On to step 6:
The number 16 fits into 63 3 times, leaving a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 14763.0
If we subtract 48 from 63, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
When dividing 150 by 16, we get 9 with a remainder of 6.
The next digit of our result is 9. 
Result so far: 14763.9
The remainder is 6 after subtracting 144 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
60 divided by 16 is 3 with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 14763.93
Subtracting 48 from 60 leaves us with 12.
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:
16 can be fit into 120 7 times, resulting in a remainder of 8.
The next digit of our result is 7. 
Result so far: 14763.937
If we subtract 112 from 120, we 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.

Going ahead to step 10:
When dividing 80 by 16, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 14763.9375
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.

Step 11:
If we divide 0 by 16, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 14763.9375
The remainder is 0 after subtracting 0 from 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 12:
16 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 14763.9375
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 14763.9375 with a remainder of 0.0.