We look at the division of 721628 by 35 
The aim is to understand the frequency of 35 in 721628.

On to step 1:
35 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 35

Let's proceed to step 2:
72 divided by 35 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 70 from 72 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 35

Going ahead to step 3:
35 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (6) from the dividend, add it to 21, then carry on: 216 / 35

Moving on to step 4:
216 divided by 35 is 6 with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 206.0
Deduct 210 from 216 and we're left with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 35

On to step 5:
62 divided by 35 is 1 with a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 2061.0
Subtracting 35 from 62 leaves us with 27.
Include the next digit (8) from the dividend after 27, then repeat: 278 / 35

Advancing to step 6:
278 divided by 35 is 7 with a remainder of 33.
Use 7 as the next digit of our solution. 
Result so far: 20617.0
Subtracting 245 from 278 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 7:
When dividing 330 by 35, we get 9 with a remainder of 15.
The number 9 becomes the next digit in our result. 
Result so far: 20617.9
Subtracting 315 from 330 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
35 can be fit into 150 4 times, resulting in a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 20617.94
The remainder is 10 after subtracting 140 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
100 divided by 35 is 2 with a remainder of 30.
Use 2 as the next digit of our solution. 
Result so far: 20617.942
Subtract 70 from 100 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 10:
35 can be fit into 300 8 times, resulting in a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 20617.9428
Subtracting 280 from 300 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
If we divide 200 by 35, we get 5 and a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 20617.94285
The remainder is 25 after subtracting 175 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 12:
If we divide 250 by 35, we get 7 and a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 20617.942857
Subtract 245 from 250 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 13:
When dividing 50 by 35, we get 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 20617.9428571
If we subtract 35 from 50, we 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.

Going ahead to step 14:
35 goes into 150 4 times with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 20617.94285714
Subtract 140 from 150 to 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.

The final result is 20617.94285714 with a remainder of 1e-08.