643107 divided by 17 
The aim is to understand the frequency of 17 in 643107.

On to step 1:
17 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 17

Going ahead to step 2:
17 can be fit into 64 3 times, resulting in a remainder of 13.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 13 after subtracting 51 from 64.
Grab the next digit (3) from the dividend, add it to 13, then carry on: 133 / 17

On to step 3:
The number 17 fits into 133 7 times, leaving a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
Subtracting 119 from 133 leaves us with 14.
Append the next digit (1) from the dividend to 14 and continue with: 141 / 17

Going ahead to step 4:
17 goes into 141 8 times with a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 378.0
The remainder is 5 after subtracting 136 from 141.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 17

Let's proceed to step 5:
When dividing 50 by 17, we get 2 with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 3782.0
The remainder is 16 after subtracting 34 from 50.
Include the next digit (7) from the dividend after 16, then repeat: 167 / 17

Step 6:
167 divided by 17 is 9 with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 37829.0
If we subtract 153 from 167, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
The number 17 fits into 140 8 times, leaving a remainder of 4.
The next digit of our result is 8. 
Result so far: 37829.8
If we subtract 136 from 140, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 8:
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: 37829.82
If we subtract 34 from 40, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 9:
17 can be fit into 60 3 times, resulting in a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 37829.823
Deduct 51 from 60 and we're left 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.

Moving on to step 10:
If we divide 90 by 17, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 37829.8235
Subtracting 85 from 90 leaves us with 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 11:
When dividing 50 by 17, we get 2 with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 37829.82352
Subtract 34 from 50 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 12:
17 can be fit into 160 9 times, resulting in a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 37829.823529
Subtracting 153 from 160 leaves us 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.

On to step 13:
17 goes into 70 4 times with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 37829.8235294
If we take 68 away from 70, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
17 goes into 20 1 times with a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 37829.82352941
Subtracting 17 from 20 leaves us 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.

The final outcome is 37829.82352941, with a leftover of 3e-09.