We divide 509420 by 54
The aim is to understand the frequency of 54 in 509420.

Advancing to step 1:
The number 54 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 54

Moving on to step 2:
If we divide 50 by 54, we get 0 and a remainder of 50.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 50, we end up with 50.
Include the next digit (9) from the dividend after 50, then repeat: 509 / 54

On to step 3:
509 divided by 54 is 9 with a remainder of 23.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 486 from 509 to get 23.
Fetch the next digit (4) from the dividend, attach it to 23 and continue: 234 / 54

Step 4:
54 goes into 234 4 times with a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 94.0
If we take 216 away from 234, we end up with 18.
Include the next digit (2) from the dividend after 18, then repeat: 182 / 54

Step 5:
If we divide 182 by 54, we get 3 and a remainder of 20.
Put 3 as the next digit of the answer. 
Result so far: 943.0
Subtract 162 from 182 to get 20.
Bring next digit (0) of the dividend behind the 20 and repeat the process: 200 / 54

Advancing to step 6:
The number 54 fits into 200 3 times, leaving a remainder of 38.
The number 3 becomes the next digit in our result. 
Result so far: 9433.0
If we subtract 162 from 200, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
The number 54 fits into 380 7 times, leaving a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 9433.7
If we take 378 away from 380, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
20 divided by 54 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 9433.7
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
If we divide 200 by 54, we get 3 and a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 9433.703
If we take 162 away from 200, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 10:
380 divided by 54 is 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 9433.7037
Subtract 378 from 380 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 11:
54 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 9433.7037
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 12:
If we divide 200 by 54, we get 3 and a remainder of 38.
Write down 3 as next digit of the result. 
Result so far: 9433.703703
Subtracting 162 from 200 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 13:
54 can be fit into 380 7 times, resulting in a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 9433.7037037
If we take 378 away from 380, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 14:
The number 54 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 9433.7037037
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 9433.7037037 with a remaining 2e-08.