360121 divided by 17 
The aim is to understand the frequency of 17 in 360121.

Let's proceed to step 1:
3 divided by 17 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 17

Going ahead to step 2:
If we divide 36 by 17, we get 2 and a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 34 away from 36, we end up with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 17

Advancing to step 3:
17 goes into 20 1 times with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtracting 17 from 20 leaves us with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 17

Moving on to step 4:
If we divide 31 by 17, we get 1 and a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 211.0
Subtract 17 from 31 to get 14.
Fetch the next digit (2) from the dividend, attach it to 14 and continue: 142 / 17

On to step 5:
17 goes into 142 8 times with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 2118.0
If we subtract 136 from 142, we get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 17

Let's proceed to step 6:
If we divide 61 by 17, we get 3 and a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 21183.0
Deduct 51 from 61 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
17 goes into 100 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 21183.5
Subtracting 85 from 100 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
The number 17 fits into 150 8 times, leaving a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 21183.58
Subtract 136 from 150 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 9:
17 goes into 140 8 times with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 21183.588
Subtracting 136 from 140 leaves us 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.

Our division results in 21183.588 with a remaining 0.0004.