Let's divide 54591588 by 243
The aim is to understand the frequency of 243 in 54591588.

Advancing to step 1:
The number 243 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 243

Advancing to step 2:
54 divided by 243 is 0 with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 54 after subtracting 0 from 54.
Grab the next digit (5) from the dividend, add it to 54, then carry on: 545 / 243

Advancing to step 3:
If we divide 545 by 243, we get 2 and a remainder of 59.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 486 from 545 to get 59.
Fetch the next digit (9) from the dividend, attach it to 59 and continue: 599 / 243

Step 4:
243 can be fit into 599 2 times, resulting in a remainder of 113.
Put 2 as the next digit of the answer. 
Result so far: 22.0
If we take 486 away from 599, we end up with 113.
Grab the next digit (1) from the dividend, add it to 113, then carry on: 1131 / 243

Step 5:
243 goes into 1131 4 times with a remainder of 159.
Put 4 as the next digit of the answer. 
Result so far: 224.0
If we subtract 972 from 1131, we get 159.
Take the next digit (5) from the dividend and append it to 159, then repeat: 1595 / 243

Let's proceed to step 6:
The number 243 fits into 1595 6 times, leaving a remainder of 137.
Record the quotient 6 as the next digit in the result. 
Result so far: 2246.0
Subtract 1458 from 1595 to get 137.
Grab the next digit (8) from the dividend, add it to 137, then carry on: 1378 / 243

Let's proceed to step 7:
1378 divided by 243 is 5 with a remainder of 163.
Use 5 as the next digit of our solution. 
Result so far: 22465.0
The remainder is 163 after subtracting 1215 from 1378.
Include the next digit (8) from the dividend after 163, then repeat: 1638 / 243

On to step 8:
If we divide 1638 by 243, we get 6 and a remainder of 180.
The next digit of our result is 6. 
Result so far: 224656.0
Subtract 1458 from 1638 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 9:
The number 243 fits into 1800 7 times, leaving a remainder of 99.
The number 7 becomes the next digit in our result. 
Result so far: 224656.7
Subtract 1701 from 1800 to get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Going ahead to step 10:
If we divide 990 by 243, we get 4 and a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 224656.74
Subtracting 972 from 990 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 11:
243 goes into 180 0 times with a remainder of 180.
The next digit of our result is 0. 
Result so far: 224656.74
Subtract 0 from 180 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 12:
243 can be fit into 1800 7 times, resulting in a remainder of 99.
Put 7 as the next digit of the answer. 
Result so far: 224656.7407
Subtract 1701 from 1800 to get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

On to step 13:
The number 243 fits into 990 4 times, leaving a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 224656.74074
If we subtract 972 from 990, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 14:
243 can be fit into 180 0 times, resulting in a remainder of 180.
The next digit of our result is 0. 
Result so far: 224656.74074
If we subtract 0 from 180, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 15:
243 goes into 1800 7 times with a remainder of 99.
Use 7 as the next digit of our solution. 
Result so far: 224656.7407407
If we take 1701 away from 1800, we end up with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Advancing to step 16:
243 can be fit into 990 4 times, resulting in a remainder of 18.
The next digit of our result is 4. 
Result so far: 224656.74074074
If we subtract 972 from 990, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 224656.74074074, with a leftover of 1.8e-08.