We look at the division of 749358 by 15 
The aim is to understand the frequency of 15 in 749358.

Step 1:
15 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 15

Let's proceed to step 2:
When dividing 74 by 15, we get 4 with a remainder of 14.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 60 from 74 leaves us with 14.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 15

On to step 3:
When dividing 149 by 15, we get 9 with a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
If we subtract 135 from 149, we get 14.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 15

Advancing to step 4:
143 divided by 15 is 9 with a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 499.0
If we take 135 away from 143, we end up with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 15

On to step 5:
15 goes into 85 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 4995.0
Subtract 75 from 85 to get 10.
Bring next digit (8) of the dividend behind the 10 and repeat the process: 108 / 15

On to step 6:
15 can be fit into 108 7 times, resulting in a remainder of 3.
The next digit of our result is 7. 
Result so far: 49957.0
Deduct 105 from 108 and we're left 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.

Step 7:
If we divide 30 by 15, we get 2 and a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 49957.2
Deduct 30 from 30 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
When dividing 0 by 15, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 49957.2
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
The number 15 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 49957.2
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 49957.2 with a remaining 0.0.