We're dividing 603429 by 54 
The aim is to understand the frequency of 54 in 603429.

Advancing to step 1:
54 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 54

Advancing to step 2:
The number 54 fits into 60 1 times, leaving a remainder of 6.
The next digit of our result is 1. 
Result so far: 1.0
If we take 54 away from 60, we end up with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 54

Going ahead to step 3:
If we divide 63 by 54, we get 1 and a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 54 from 63 leaves us with 9.
Fetch the next digit (4) from the dividend, attach it to 9 and continue: 94 / 54

On to step 4:
94 divided by 54 is 1 with a remainder of 40.
The number 1 becomes the next digit in our result. 
Result so far: 111.0
Subtract 54 from 94 to get 40.
Grab the next digit (2) from the dividend, add it to 40, then carry on: 402 / 54

On to step 5:
54 goes into 402 7 times with a remainder of 24.
Use 7 as the next digit of our solution. 
Result so far: 1117.0
Subtracting 378 from 402 leaves us with 24.
Take the next digit (9) from the dividend and append it to 24, then repeat: 249 / 54

Moving on to step 6:
When dividing 249 by 54, we get 4 with a remainder of 33.
The next digit of our result is 4. 
Result so far: 11174.0
Subtracting 216 from 249 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 7:
54 goes into 330 6 times with a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 11174.6
Deduct 324 from 330 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.

On to step 8:
60 divided by 54 is 1 with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 11174.61
Subtract 54 from 60 to 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.

Going ahead to step 9:
60 divided by 54 is 1 with a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 11174.611
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 11174.611, with a leftover of 0.0006.