We're dividing 54207596 by 243 
The aim is to understand the frequency of 243 in 54207596.

Step 1:
When dividing 5 by 243, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 243

Going ahead to step 2:
243 goes into 54 0 times with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 54 leaves us with 54.
Fetch the next digit (2) from the dividend, attach it to 54 and continue: 542 / 243

Moving on to step 3:
When dividing 542 by 243, we get 2 with a remainder of 56.
The next digit of our result is 2. 
Result so far: 2.0
If we take 486 away from 542, we end up with 56.
Fetch the next digit (0) from the dividend, attach it to 56 and continue: 560 / 243

On to step 4:
560 divided by 243 is 2 with a remainder of 74.
The next digit of our result is 2. 
Result so far: 22.0
The remainder is 74 after subtracting 486 from 560.
Append the next digit (7) from the dividend to 74 and continue with: 747 / 243

Advancing to step 5:
If we divide 747 by 243, we get 3 and a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 223.0
Subtracting 729 from 747 leaves us with 18.
Bring next digit (5) of the dividend behind the 18 and repeat the process: 185 / 243

Advancing to step 6:
243 goes into 185 0 times with a remainder of 185.
Use 0 as the next digit of our solution. 
Result so far: 2230.0
The remainder is 185 after subtracting 0 from 185.
Grab the next digit (9) from the dividend, add it to 185, then carry on: 1859 / 243

Let's proceed to step 7:
243 goes into 1859 7 times with a remainder of 158.
The number 7 becomes the next digit in our result. 
Result so far: 22307.0
If we subtract 1701 from 1859, we get 158.
Grab the next digit (6) from the dividend, add it to 158, then carry on: 1586 / 243

Advancing to step 8:
1586 divided by 243 is 6 with a remainder of 128.
The number 6 becomes the next digit in our result. 
Result so far: 223076.0
Subtract 1458 from 1586 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Step 9:
When dividing 1280 by 243, we get 5 with a remainder of 65.
The next digit of our result is 5. 
Result so far: 223076.5
If we take 1215 away from 1280, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 10:
650 divided by 243 is 2 with a remainder of 164.
The number 2 becomes the next digit in our result. 
Result so far: 223076.52
Deduct 486 from 650 and we're left with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Advancing to step 11:
If we divide 1640 by 243, we get 6 and a remainder of 182.
Put 6 as the next digit of the answer. 
Result so far: 223076.526
The remainder is 182 after subtracting 1458 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Advancing to step 12:
1820 divided by 243 is 7 with a remainder of 119.
Record the quotient 7 as the next digit in the result. 
Result so far: 223076.5267
If we subtract 1701 from 1820, we get 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Going ahead to step 13:
243 can be fit into 1190 4 times, resulting in a remainder of 218.
Use 4 as the next digit of our solution. 
Result so far: 223076.52674
Subtract 972 from 1190 to get 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Step 14:
2180 divided by 243 is 8 with a remainder of 236.
Put 8 as the next digit of the answer. 
Result so far: 223076.526748
If we take 1944 away from 2180, we end up with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

On to step 15:
If we divide 2360 by 243, we get 9 and a remainder of 173.
Record the quotient 9 as the next digit in the result. 
Result so far: 223076.5267489
Subtracting 2187 from 2360 leaves us with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Advancing to step 16:
If we divide 1730 by 243, we get 7 and a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 223076.52674897
Deduct 1701 from 1730 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

The quotient of the division is 223076.52674897, and the remainder is 2.9e-08.