We're dividing 481221 by 48 
The aim is to understand the frequency of 48 in 481221.

Going ahead to step 1:
4 divided by 48 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 48

Advancing to step 2:
48 divided by 48 is 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 48 from 48 and we're left with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 48

Step 3:
48 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 48

On to step 4:
When dividing 12 by 48, we get 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 100.0
The remainder is 12 after subtracting 0 from 12.
Append the next digit (2) from the dividend to 12 and continue with: 122 / 48

Advancing to step 5:
If we divide 122 by 48, we get 2 and a remainder of 26.
Put 2 as the next digit of the answer. 
Result so far: 1002.0
The remainder is 26 after subtracting 96 from 122.
Include the next digit (1) from the dividend after 26, then repeat: 261 / 48

Step 6:
48 goes into 261 5 times with a remainder of 21.
Put 5 as the next digit of the answer. 
Result so far: 10025.0
Deduct 240 from 261 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
210 divided by 48 is 4 with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 10025.4
If we take 192 away from 210, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
180 divided by 48 is 3 with a remainder of 36.
Write down 3 as next digit of the result. 
Result so far: 10025.43
Subtract 144 from 180 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 9:
If we divide 360 by 48, we get 7 and a remainder of 24.
Record the quotient 7 as the next digit in the result. 
Result so far: 10025.437
If we take 336 away from 360, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 10:
48 can be fit into 240 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 10025.4375
If we take 240 away from 240, 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.

Step 11:
48 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 10025.4375
Subtracting 0 from 0 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 12:
When dividing 0 by 48, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10025.4375
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.

Our division results in 10025.4375 with a remaining 0.0.