We divide 558761 by 15
The aim is to understand the frequency of 15 in 558761.

Let's proceed to step 1:
5 divided by 15 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 15

Going ahead to step 2:
The number 15 fits into 55 3 times, leaving a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 45 from 55 to get 10.
Append the next digit (8) from the dividend to 10 and continue with: 108 / 15

Advancing to step 3:
The number 15 fits into 108 7 times, leaving a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Deduct 105 from 108 and we're left with 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 15

On to step 4:
37 divided by 15 is 2 with a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 372.0
Subtract 30 from 37 to get 7.
Include the next digit (6) from the dividend after 7, then repeat: 76 / 15

Let's proceed to step 5:
The number 15 fits into 76 5 times, leaving a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 3725.0
Subtracting 75 from 76 leaves us with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 15

Moving on to step 6:
15 can be fit into 11 0 times, resulting in a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 37250.0
Subtracting 0 from 11 leaves us 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.
The number 7 becomes the next digit in our result. 
Result so far: 37250.7
Subtract 105 from 110 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.

On to step 8:
If we divide 50 by 15, we get 3 and a remainder of 5.
The next digit of our result is 3. 
Result so far: 37250.73
If we subtract 45 from 50, we 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.

Let's proceed to step 9:
If we divide 50 by 15, we get 3 and a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 37250.733
Deduct 45 from 50 and we're left 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.

Our division results in 37250.733 with a remaining 0.0005.