640379 ÷ 17 
The aim is to understand the frequency of 17 in 640379.

Let's proceed to step 1:
17 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 17

Going ahead to step 2:
17 can be fit into 64 3 times, resulting in a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 51 from 64, we get 13.
Fetch the next digit (0) from the dividend, attach it to 13 and continue: 130 / 17

Advancing to step 3:
If we divide 130 by 17, we get 7 and a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 37.0
Subtract 119 from 130 to get 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 17

Advancing to step 4:
113 divided by 17 is 6 with a remainder of 11.
The next digit of our result is 6. 
Result so far: 376.0
Deduct 102 from 113 and we're left with 11.
Take the next digit (7) from the dividend and append it to 11, then repeat: 117 / 17

On to step 5:
17 goes into 117 6 times with a remainder of 15.
Put 6 as the next digit of the answer. 
Result so far: 3766.0
The remainder is 15 after subtracting 102 from 117.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 17

Step 6:
The number 17 fits into 159 9 times, leaving a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 37669.0
Subtracting 153 from 159 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
When dividing 60 by 17, we get 3 with a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 37669.3
If we take 51 away from 60, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 8:
The number 17 fits into 90 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 37669.35
Subtract 85 from 90 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.

Advancing to step 9:
50 divided by 17 is 2 with a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 37669.352
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.

Going ahead to step 10:
17 goes into 160 9 times with a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 37669.3529
If we take 153 away from 160, we end up 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 11:
When dividing 70 by 17, we get 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 37669.35294
If we subtract 68 from 70, we 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.

Moving on to step 12:
20 divided by 17 is 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 37669.352941
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 13:
If we divide 30 by 17, we get 1 and a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 37669.3529411
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.

In conclusion, the division gives 37669.3529411 with a balance of 1.3e-07.