663180 divided by 54 
The aim is to understand the frequency of 54 in 663180.

Advancing to step 1:
6 divided by 54 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 54

Let's proceed to step 2:
54 goes into 66 1 times with a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 54 from 66 to get 12.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 54

On to step 3:
54 can be fit into 123 2 times, resulting in a remainder of 15.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 108 from 123, we get 15.
Grab the next digit (1) from the dividend, add it to 15, then carry on: 151 / 54

Advancing to step 4:
151 divided by 54 is 2 with a remainder of 43.
Put 2 as the next digit of the answer. 
Result so far: 122.0
If we take 108 away from 151, we end up with 43.
Include the next digit (8) from the dividend after 43, then repeat: 438 / 54

Step 5:
If we divide 438 by 54, we get 8 and a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 1228.0
If we subtract 432 from 438, we get 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 54

Moving on to step 6:
54 can be fit into 60 1 times, resulting in a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 12281.0
Deduct 54 from 60 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.

Step 7:
54 goes into 60 1 times with a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 12281.1
The remainder is 6 after subtracting 54 from 60.
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 8:
If we divide 60 by 54, we get 1 and a remainder of 6.
The next digit of our result is 1. 
Result so far: 12281.11
If we subtract 54 from 60, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 12281.11, with a leftover of 0.006.