We look at the division of 492339 by 54 
The aim is to understand the frequency of 54 in 492339.

On to step 1:
4 divided by 54 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 54

On to step 2:
49 divided by 54 is 0 with a remainder of 49.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 49 after subtracting 0 from 49.
Take the next digit (2) from the dividend and append it to 49, then repeat: 492 / 54

Step 3:
492 divided by 54 is 9 with a remainder of 6.
The next digit of our result is 9. 
Result so far: 9.0
Deduct 486 from 492 and we're left with 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 54

Moving on to step 4:
If we divide 63 by 54, we get 1 and a remainder of 9.
The next digit of our result is 1. 
Result so far: 91.0
Subtracting 54 from 63 leaves us with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 54

On to step 5:
When dividing 93 by 54, we get 1 with a remainder of 39.
The next digit of our result is 1. 
Result so far: 911.0
Subtracting 54 from 93 leaves us with 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 54

Advancing to step 6:
The number 54 fits into 399 7 times, leaving a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 9117.0
If we take 378 away from 399, we end up 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.

Step 7:
When dividing 210 by 54, we get 3 with a remainder of 48.
Use 3 as the next digit of our solution. 
Result so far: 9117.3
If we take 162 away from 210, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 8:
480 divided by 54 is 8 with a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 9117.38
If we take 432 away from 480, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 9:
The number 54 fits into 480 8 times, leaving a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 9117.388
Subtract 432 from 480 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final result is 9117.388 with a remainder of 0.0048.