21548 ÷ 48 
The aim is to understand the frequency of 48 in 21548.

Moving on to step 1:
2 divided by 48 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 48

Moving on to step 2:
48 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 48

On to step 3:
The number 48 fits into 215 4 times, leaving a remainder of 23.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 192 from 215, we get 23.
Include the next digit (4) from the dividend after 23, then repeat: 234 / 48

Let's proceed to step 4:
The number 48 fits into 234 4 times, leaving a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
The remainder is 42 after subtracting 192 from 234.
Fetch the next digit (8) from the dividend, attach it to 42 and continue: 428 / 48

Advancing to step 5:
If we divide 428 by 48, we get 8 and a remainder of 44.
The next digit of our result is 8. 
Result so far: 448.0
Subtracting 384 from 428 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 6:
48 can be fit into 440 9 times, resulting in a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 448.9
Subtract 432 from 440 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
When dividing 80 by 48, we get 1 with a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 448.91
Subtracting 48 from 80 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 8:
The number 48 fits into 320 6 times, leaving a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 448.916
Subtracting 288 from 320 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 9:
48 goes into 320 6 times with a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 448.9166
Deduct 288 from 320 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 448.9166, with a leftover of 0.00032.