664679 ÷ 16 
The aim is to understand the frequency of 16 in 664679.

Advancing to step 1:
The number 16 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 16

On to step 2:
The number 16 fits into 66 4 times, leaving a remainder of 2.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 64 from 66 to get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 16

Step 3:
16 can be fit into 24 1 times, resulting in a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 41.0
The remainder is 8 after subtracting 16 from 24.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 16

Let's proceed to step 4:
If we divide 86 by 16, we get 5 and a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 415.0
Subtract 80 from 86 to get 6.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 16

Advancing to step 5:
The number 16 fits into 67 4 times, leaving a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 4154.0
Subtract 64 from 67 to get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 16

Moving on to step 6:
16 can be fit into 39 2 times, resulting in a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 41542.0
The remainder is 7 after subtracting 32 from 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 7:
70 divided by 16 is 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 41542.4
The remainder is 6 after subtracting 64 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
60 divided by 16 is 3 with a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 41542.43
Subtract 48 from 60 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
16 goes into 120 7 times with a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 41542.437
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:
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: 41542.4375
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.

Going ahead 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: 41542.4375
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.

Step 12:
16 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 41542.4375
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.

Our division results in 41542.4375 with a remaining 0.0.