We look at the division of 405970 by 17 
The aim is to understand the frequency of 17 in 405970.

Advancing to step 1:
If we divide 4 by 17, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 17

On to step 2:
The number 17 fits into 40 2 times, leaving a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 34 from 40 leaves us with 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 17

Going ahead to step 3:
65 divided by 17 is 3 with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 23.0
Subtract 51 from 65 to get 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 17

On to step 4:
17 can be fit into 149 8 times, resulting in a remainder of 13.
Use 8 as the next digit of our solution. 
Result so far: 238.0
Subtract 136 from 149 to get 13.
Append the next digit (7) from the dividend to 13 and continue with: 137 / 17

Moving on to step 5:
137 divided by 17 is 8 with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 2388.0
If we subtract 136 from 137, we get 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 17

Let's proceed to step 6:
When dividing 10 by 17, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 23880.0
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 7:
When dividing 100 by 17, we get 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 23880.5
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.

Let's proceed to step 8:
150 divided by 17 is 8 with a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 23880.58
Subtracting 136 from 150 leaves us 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 9:
When dividing 140 by 17, we get 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 23880.588
The remainder is 4 after subtracting 136 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 23880.588, and the remainder is 0.0004.