Let's divide 735101 by 15
The aim is to understand the frequency of 15 in 735101.

Going ahead to step 1:
When dividing 7 by 15, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 15

On to step 2:
15 can be fit into 73 4 times, resulting in a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 60 from 73 leaves us with 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 15

Moving on to step 3:
If we divide 135 by 15, we get 9 and a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 49.0
If we take 135 away from 135, we end up with 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 15

Moving on to step 4:
15 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 490.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 15

Step 5:
When dividing 10 by 15, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 4900.0
Subtracting 0 from 10 leaves us with 10.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 15

Step 6:
15 can be fit into 101 6 times, resulting in a remainder of 11.
Write down 6 as next digit of the result. 
Result so far: 49006.0
If we take 90 away from 101, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 7:
15 goes into 110 7 times with a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 49006.7
The remainder is 5 after subtracting 105 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 49006.73
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
50 divided by 15 is 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 49006.733
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 49006.733 and a remainder of 0.0005.