336609 ÷ 17 
The aim is to understand the frequency of 17 in 336609.

Going ahead to step 1:
3 divided by 17 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 17

Step 2:
The number 17 fits into 33 1 times, leaving a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 17 from 33 leaves us with 16.
Grab the next digit (6) from the dividend, add it to 16, then carry on: 166 / 17

Moving on to step 3:
17 can be fit into 166 9 times, resulting in a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Subtracting 153 from 166 leaves us with 13.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 17

Moving on to step 4:
17 goes into 136 8 times with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 198.0
If we subtract 136 from 136, we get 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 17

On to step 5:
The number 17 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 1980.0
If we take 0 away from 0, we end up with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 17

Step 6:
17 can be fit into 9 0 times, resulting in a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 19800.0
Deduct 0 from 9 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.

Going ahead to step 7:
90 divided by 17 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 19800.5
Deduct 85 from 90 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
17 goes into 50 2 times with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 19800.52
Subtract 34 from 50 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
If we divide 160 by 17, we get 9 and a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 19800.529
If we subtract 153 from 160, 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.

Let's proceed to step 10:
When dividing 70 by 17, we get 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 19800.5294
Subtracting 68 from 70 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 11:
If we divide 20 by 17, we get 1 and a remainder of 3.
The next digit of our result is 1. 
Result so far: 19800.52941
Subtracting 17 from 20 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 12:
The number 17 fits into 30 1 times, leaving a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 19800.529411
If we subtract 17 from 30, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final result is 19800.529411 with a remainder of 1.3e-06.