We look at the division of 687593 by 16 
The aim is to understand the frequency of 16 in 687593.

Moving on to step 1:
16 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 16

On to step 2:
If we divide 68 by 16, we get 4 and a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 4 after subtracting 64 from 68.
Grab the next digit (7) from the dividend, add it to 4, then carry on: 47 / 16

Let's proceed to step 3:
When dividing 47 by 16, we get 2 with a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Deduct 32 from 47 and we're left with 15.
Fetch the next digit (5) from the dividend, attach it to 15 and continue: 155 / 16

Let's proceed to step 4:
155 divided by 16 is 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 429.0
Subtracting 144 from 155 leaves us with 11.
Fetch the next digit (9) from the dividend, attach it to 11 and continue: 119 / 16

Step 5:
When dividing 119 by 16, we get 7 with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 4297.0
Deduct 112 from 119 and we're left with 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 16

Let's proceed to step 6:
When dividing 73 by 16, we get 4 with a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 42974.0
Deduct 64 from 73 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
If we divide 90 by 16, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 42974.5
The remainder is 10 after subtracting 80 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
The number 16 fits into 100 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 42974.56
If we take 96 away from 100, 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.

Advancing to step 9:
The number 16 fits into 40 2 times, leaving a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 42974.562
If we take 32 away from 40, we end up 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.

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: 42974.5625
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.

Moving on to step 11:
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: 42974.5625
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.

Let's proceed to step 12:
The number 16 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 42974.5625
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.

After the division, we end up with 42974.5625 and a remainder of 0.0.