76436 ÷ 15 
The aim is to understand the frequency of 15 in 76436.

Step 1:
15 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (6) of the dividend behind the 7 and repeat the process: 76 / 15

Moving on to step 2:
The number 15 fits into 76 5 times, leaving a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 75 from 76 leaves us with 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 15

Let's proceed to step 3:
14 divided by 15 is 0 with a remainder of 14.
The next digit of our result is 0. 
Result so far: 50.0
Deduct 0 from 14 and we're left with 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 15

Step 4:
The number 15 fits into 143 9 times, leaving a remainder of 8.
The next digit of our result is 9. 
Result so far: 509.0
Deduct 135 from 143 and we're left with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 15

Moving on to step 5:
15 goes into 86 5 times with a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 5095.0
If we take 75 away from 86, 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 6:
If we divide 110 by 15, we get 7 and a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 5095.7
Deduct 105 from 110 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.

Advancing to step 7:
50 divided by 15 is 3 with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 5095.73
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.

On to step 8:
When dividing 50 by 15, we get 3 with a remainder of 5.
The next digit of our result is 3. 
Result so far: 5095.733
Subtracting 45 from 50 leaves us 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.

After the division, we end up with 5095.733 and a remainder of 0.0005.