We look at the division of 358318 by 17 
The aim is to understand the frequency of 17 in 358318.

Step 1:
17 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 17

Step 2:
35 divided by 17 is 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 34 from 35, we get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 17

On to step 3:
When dividing 18 by 17, we get 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Deduct 17 from 18 and we're left with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 17

Let's proceed to step 4:
When dividing 13 by 17, we get 0 with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 210.0
Subtract 0 from 13 to get 13.
Append the next digit (1) from the dividend to 13 and continue with: 131 / 17

Moving on to step 5:
131 divided by 17 is 7 with a remainder of 12.
The next digit of our result is 7. 
Result so far: 2107.0
Subtracting 119 from 131 leaves us with 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 17

On to step 6:
If we divide 128 by 17, we get 7 and a remainder of 9.
The next digit of our result is 7. 
Result so far: 21077.0
If we subtract 119 from 128, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
If we divide 90 by 17, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 21077.5
If we subtract 85 from 90, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
If we divide 50 by 17, we get 2 and a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 21077.52
The remainder is 16 after subtracting 34 from 50.
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.
The number 9 becomes the next digit in our result. 
Result so far: 21077.529
Subtracting 153 from 160 leaves us with 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 10:
When dividing 70 by 17, we get 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 21077.5294
The remainder is 2 after subtracting 68 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 11:
20 divided by 17 is 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 21077.52941
The remainder is 3 after subtracting 17 from 20.
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:
17 can be fit into 30 1 times, resulting in a remainder of 13.
The next digit of our result is 1. 
Result so far: 21077.529411
Deduct 17 from 30 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Our division results in 21077.529411 with a remaining 1.3e-06.