Let's divide 13910 by 35
The aim is to understand the frequency of 35 in 13910.

Moving on to step 1:
35 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 35

Going ahead to step 2:
35 can be fit into 13 0 times, resulting in a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 35

Step 3:
When dividing 139 by 35, we get 3 with a remainder of 34.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 105 from 139 and we're left with 34.
Take the next digit (1) from the dividend and append it to 34, then repeat: 341 / 35

Step 4:
35 can be fit into 341 9 times, resulting in a remainder of 26.
Put 9 as the next digit of the answer. 
Result so far: 39.0
Subtracting 315 from 341 leaves us with 26.
Include the next digit (0) from the dividend after 26, then repeat: 260 / 35

Advancing to step 5:
35 goes into 260 7 times with a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 397.0
Subtract 245 from 260 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 6:
The number 35 fits into 150 4 times, leaving a remainder of 10.
The next digit of our result is 4. 
Result so far: 397.4
Deduct 140 from 150 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
35 goes into 100 2 times with a remainder of 30.
The next digit of our result is 2. 
Result so far: 397.42
Subtracting 70 from 100 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
300 divided by 35 is 8 with a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 397.428
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.

Step 9:
200 divided by 35 is 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 397.4285
Subtracting 175 from 200 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 10:
250 divided by 35 is 7 with a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 397.42857
If we take 245 away from 250, we end up 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.

Step 11:
The number 35 fits into 50 1 times, leaving a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 397.428571
If we take 35 away from 50, we end up 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.

Going ahead to step 12:
35 can be fit into 150 4 times, resulting in a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 397.4285714
If we take 140 away from 150, we end up with 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 13:
The number 35 fits into 100 2 times, leaving a remainder of 30.
Use 2 as the next digit of our solution. 
Result so far: 397.42857142
Deduct 70 from 100 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 397.42857142 with a remaining 3e-08.