We look at the division of 131449 by 17 
The aim is to understand the frequency of 17 in 131449.

On to step 1:
If we divide 1 by 17, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 17

Step 2:
When dividing 13 by 17, we get 0 with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 17

On to step 3:
The number 17 fits into 131 7 times, leaving a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 119 from 131 and we're left with 12.
Bring next digit (4) of the dividend behind the 12 and repeat the process: 124 / 17

Advancing to step 4:
If we divide 124 by 17, we get 7 and a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 77.0
Deduct 119 from 124 and we're left with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 17

Advancing to step 5:
17 can be fit into 54 3 times, resulting in a remainder of 3.
The next digit of our result is 3. 
Result so far: 773.0
If we subtract 51 from 54, we get 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 17

Advancing to step 6:
The number 17 fits into 39 2 times, leaving a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 7732.0
Subtract 34 from 39 to 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 7:
The number 17 fits into 50 2 times, leaving a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 7732.2
Deduct 34 from 50 and we're left with 16.
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 8:
160 divided by 17 is 9 with a remainder of 7.
The next digit of our result is 9. 
Result so far: 7732.29
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 9:
70 divided by 17 is 4 with a remainder of 2.
The next digit of our result is 4. 
Result so far: 7732.294
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.

Moving on to step 10:
20 divided by 17 is 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 7732.2941
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.

Moving on to step 11:
30 divided by 17 is 1 with a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 7732.29411
Subtract 17 from 30 to 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 outcome is 7732.29411, with a leftover of 1.3e-05.