We're dividing 243396 by 57 
The aim is to understand the frequency of 57 in 243396.

Advancing to step 1:
When dividing 2 by 57, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 57

Going ahead to step 2:
57 can be fit into 24 0 times, resulting in a remainder of 24.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 24 and we're left with 24.
Take the next digit (3) from the dividend and append it to 24, then repeat: 243 / 57

Let's proceed to step 3:
243 divided by 57 is 4 with a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 228 away from 243, we end up with 15.
Grab the next digit (3) from the dividend, add it to 15, then carry on: 153 / 57

Moving on to step 4:
If we divide 153 by 57, we get 2 and a remainder of 39.
Use 2 as the next digit of our solution. 
Result so far: 42.0
If we take 114 away from 153, we end up with 39.
Bring next digit (9) of the dividend behind the 39 and repeat the process: 399 / 57

Let's proceed to step 5:
399 divided by 57 is 7 with a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 427.0
If we subtract 399 from 399, we get 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 57

On to step 6:
If we divide 6 by 57, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 4270.0
If we subtract 0 from 6, 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.

Let's proceed to step 7:
57 can be fit into 60 1 times, resulting in a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 4270.1
The remainder is 3 after subtracting 57 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
When dividing 30 by 57, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 4270.1
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
57 can be fit into 300 5 times, resulting in a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 4270.105
The remainder is 15 after subtracting 285 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 10:
When dividing 150 by 57, we get 2 with a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 4270.1052
Subtract 114 from 150 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 11:
57 can be fit into 360 6 times, resulting in a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 4270.10526
If we subtract 342 from 360, 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.

Going ahead to step 12:
180 divided by 57 is 3 with a remainder of 9.
The next digit of our result is 3. 
Result so far: 4270.105263
If we subtract 171 from 180, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 13:
57 goes into 90 1 times with a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 4270.1052631
If we take 57 away from 90, we end up 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.

Going ahead to step 14:
57 can be fit into 330 5 times, resulting in a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 4270.10526315
Deduct 285 from 330 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

In conclusion, the division gives 4270.10526315 with a balance of 4.5e-08.