349975 ÷ 17 
The aim is to understand the frequency of 17 in 349975.

Advancing to step 1:
The number 17 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 17

On to step 2:
When dividing 34 by 17, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 34 from 34 leaves us with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 17

Step 3:
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: 20.0
If we subtract 0 from 9, we get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 17

Let's proceed to step 4:
If we divide 99 by 17, we get 5 and a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 205.0
Subtract 85 from 99 to get 14.
Append the next digit (7) from the dividend to 14 and continue with: 147 / 17

Going ahead to step 5:
17 can be fit into 147 8 times, resulting in a remainder of 11.
Record the quotient 8 as the next digit in the result. 
Result so far: 2058.0
Subtracting 136 from 147 leaves us with 11.
Include the next digit (5) from the dividend after 11, then repeat: 115 / 17

Advancing to step 6:
When dividing 115 by 17, we get 6 with a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 20586.0
If we subtract 102 from 115, 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.

Advancing to step 7:
17 goes into 130 7 times with a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 20586.7
If we subtract 119 from 130, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 8:
110 divided by 17 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 20586.76
Subtract 102 from 110 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
If we divide 80 by 17, we get 4 and a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 20586.764
Deduct 68 from 80 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
If we divide 120 by 17, we get 7 and a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 20586.7647
Subtract 119 from 120 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 11:
10 divided by 17 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 20586.7647
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 12:
17 can be fit into 100 5 times, resulting in a remainder of 15.
The next digit of our result is 5. 
Result so far: 20586.764705
Subtract 85 from 100 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 13:
17 can be fit into 150 8 times, resulting in a remainder of 14.
The next digit of our result is 8. 
Result so far: 20586.7647058
If we take 136 away from 150, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 14:
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: 20586.76470588
If we take 136 away from 140, we end up 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.

The final outcome is 20586.76470588, with a leftover of 4e-09.