2458739 divided by 15 
The aim is to understand the frequency of 15 in 2458739.

Let's proceed to step 1:
2 divided by 15 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 15

Going ahead to step 2:
The number 15 fits into 24 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 9 after subtracting 15 from 24.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 15

Moving on to step 3:
The number 15 fits into 95 6 times, leaving a remainder of 5.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
Deduct 90 from 95 and we're left with 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 15

On to step 4:
58 divided by 15 is 3 with a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 163.0
If we take 45 away from 58, we end up with 13.
Include the next digit (7) from the dividend after 13, then repeat: 137 / 15

On to step 5:
When dividing 137 by 15, we get 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 1639.0
If we take 135 away from 137, we end up with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 15

On to step 6:
23 divided by 15 is 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 16391.0
If we take 15 away from 23, we end up with 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 15

Moving on to step 7:
The number 15 fits into 89 5 times, leaving a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 163915.0
Deduct 75 from 89 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
If we divide 140 by 15, we get 9 and a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 163915.9
Subtract 135 from 140 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 9:
When dividing 50 by 15, we get 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 163915.93
If we take 45 away from 50, 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.

Let's proceed to step 10:
50 divided by 15 is 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 163915.933
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.

Our division results in 163915.933 with a remaining 0.0005.