57558160 ÷ 243 
The aim is to understand the frequency of 243 in 57558160.

Let's proceed to step 1:
243 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 243

Going ahead to step 2:
If we divide 57 by 243, we get 0 and a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Bring next digit (5) of the dividend behind the 57 and repeat the process: 575 / 243

Going ahead to step 3:
243 goes into 575 2 times with a remainder of 89.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 486 from 575 and we're left with 89.
Include the next digit (5) from the dividend after 89, then repeat: 895 / 243

Let's proceed to step 4:
If we divide 895 by 243, we get 3 and a remainder of 166.
Write down 3 as next digit of the result. 
Result so far: 23.0
If we take 729 away from 895, we end up with 166.
Include the next digit (8) from the dividend after 166, then repeat: 1668 / 243

Advancing to step 5:
1668 divided by 243 is 6 with a remainder of 210.
The next digit of our result is 6. 
Result so far: 236.0
If we subtract 1458 from 1668, we get 210.
Include the next digit (1) from the dividend after 210, then repeat: 2101 / 243

Going ahead to step 6:
If we divide 2101 by 243, we get 8 and a remainder of 157.
Record the quotient 8 as the next digit in the result. 
Result so far: 2368.0
Subtracting 1944 from 2101 leaves us with 157.
Grab the next digit (6) from the dividend, add it to 157, then carry on: 1576 / 243

On to step 7:
243 can be fit into 1576 6 times, resulting in a remainder of 118.
The number 6 becomes the next digit in our result. 
Result so far: 23686.0
Subtract 1458 from 1576 to get 118.
Grab the next digit (0) from the dividend, add it to 118, then carry on: 1180 / 243

On to step 8:
243 can be fit into 1180 4 times, resulting in a remainder of 208.
The next digit of our result is 4. 
Result so far: 236864.0
Subtracting 972 from 1180 leaves us with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Advancing to step 9:
243 goes into 2080 8 times with a remainder of 136.
The next digit of our result is 8. 
Result so far: 236864.8
Subtract 1944 from 2080 to get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

On to step 10:
The number 243 fits into 1360 5 times, leaving a remainder of 145.
Record the quotient 5 as the next digit in the result. 
Result so far: 236864.85
If we take 1215 away from 1360, we end up with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Step 11:
When dividing 1450 by 243, we get 5 with a remainder of 235.
Put 5 as the next digit of the answer. 
Result so far: 236864.855
The remainder is 235 after subtracting 1215 from 1450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

The quotient of the division is 236864.855, and the remainder is 0.0235.