Let's divide 337857 by 17
The aim is to understand the frequency of 17 in 337857.

Advancing to step 1:
3 divided by 17 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 17

Advancing to step 2:
If we divide 33 by 17, we get 1 and a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 17 away from 33, we end up with 16.
Bring next digit (7) of the dividend behind the 16 and repeat the process: 167 / 17

On to step 3:
If we divide 167 by 17, we get 9 and a remainder of 14.
The next digit of our result is 9. 
Result so far: 19.0
The remainder is 14 after subtracting 153 from 167.
Fetch the next digit (8) from the dividend, attach it to 14 and continue: 148 / 17

Step 4:
17 can be fit into 148 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 198.0
The remainder is 12 after subtracting 136 from 148.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 17

Going ahead to step 5:
17 goes into 125 7 times with a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 1987.0
If we subtract 119 from 125, we get 6.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 17

Step 6:
The number 17 fits into 67 3 times, leaving a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 19873.0
The remainder is 16 after subtracting 51 from 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
When dividing 160 by 17, we get 9 with a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 19873.9
The remainder is 7 after subtracting 153 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 8:
70 divided by 17 is 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 19873.94
Subtract 68 from 70 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
When dividing 20 by 17, we get 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 19873.941
Deduct 17 from 20 and we're left 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.

Let's proceed to step 10:
The number 17 fits into 30 1 times, leaving a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 19873.9411
Subtracting 17 from 30 leaves us 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.

After the division, we end up with 19873.9411 and a remainder of 0.00013.