518521 divided by 48 
The aim is to understand the frequency of 48 in 518521.

On to step 1:
The number 48 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 48

Step 2:
48 goes into 51 1 times with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 48 away from 51, we end up with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 48

Going ahead to step 3:
If we divide 38 by 48, we get 0 and a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 38 after subtracting 0 from 38.
Take the next digit (5) from the dividend and append it to 38, then repeat: 385 / 48

Moving on to step 4:
The number 48 fits into 385 8 times, leaving a remainder of 1.
The next digit of our result is 8. 
Result so far: 108.0
Subtracting 384 from 385 leaves us with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 48

Going ahead to step 5:
12 divided by 48 is 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 1080.0
Deduct 0 from 12 and we're left with 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 48

Moving on to step 6:
When dividing 121 by 48, we get 2 with a remainder of 25.
Record the quotient 2 as the next digit in the result. 
Result so far: 10802.0
If we take 96 away from 121, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 7:
48 can be fit into 250 5 times, resulting in a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 10802.5
Deduct 240 from 250 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
When dividing 100 by 48, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 10802.52
Subtracting 96 from 100 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
When dividing 40 by 48, we get 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 10802.52
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
48 goes into 400 8 times with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 10802.5208
Deduct 384 from 400 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 11:
160 divided by 48 is 3 with a remainder of 16.
The next digit of our result is 3. 
Result so far: 10802.52083
The remainder is 16 after subtracting 144 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 12:
If we divide 160 by 48, we get 3 and a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 10802.520833
If we subtract 144 from 160, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 10802.520833 with a remaining 1.6e-06.