372486 ÷ 15 
The aim is to understand the frequency of 15 in 372486.

Moving on to step 1:
3 divided by 15 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 15

Going ahead to step 2:
The number 15 fits into 37 2 times, leaving a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 30 from 37, we get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 15

Let's proceed to step 3:
15 goes into 72 4 times with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 24.0
Subtract 60 from 72 to get 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 15

Moving on to step 4:
124 divided by 15 is 8 with a remainder of 4.
The next digit of our result is 8. 
Result so far: 248.0
Deduct 120 from 124 and we're left with 4.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 15

On to step 5:
48 divided by 15 is 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 2483.0
If we take 45 away from 48, we end up with 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 15

Moving on to step 6:
The number 15 fits into 36 2 times, leaving a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 24832.0
Deduct 30 from 36 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
15 can be fit into 60 4 times, resulting in a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 24832.4
Subtracting 60 from 60 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.

Moving on to step 8:
15 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 24832.4
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.

Moving on to step 9:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 24832.4
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 24832.4, with a leftover of 0.0.