We're dividing 16987 by 12 
The aim is to understand the frequency of 12 in 16987.

Moving on to step 1:
If we divide 1 by 12, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 12

Going ahead to step 2:
16 divided by 12 is 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 12 from 16 to get 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 12

Step 3:
When dividing 49 by 12, we get 4 with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we subtract 48 from 49, we get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 12

Advancing to step 4:
When dividing 18 by 12, we get 1 with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 141.0
If we take 12 away from 18, we end up with 6.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 12

Moving on to step 5:
67 divided by 12 is 5 with a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 1415.0
If we subtract 60 from 67, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 6:
70 divided by 12 is 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 1415.5
Subtract 60 from 70 to 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.

Moving on to step 7:
12 goes into 100 8 times with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 1415.58
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.

Moving on to step 8:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 1415.583
The remainder is 4 after subtracting 36 from 40.
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:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The next digit of our result is 3. 
Result so far: 1415.5833
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 1415.5833 and a remainder of 4e-05.