We're dividing 286443 by 57 
The aim is to understand the frequency of 57 in 286443.

Advancing to step 1:
57 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 57

Advancing to step 2:
When dividing 28 by 57, we get 0 with a remainder of 28.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 28 to get 28.
Fetch the next digit (6) from the dividend, attach it to 28 and continue: 286 / 57

Moving on to step 3:
57 goes into 286 5 times with a remainder of 1.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 1 after subtracting 285 from 286.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 57

On to step 4:
57 goes into 14 0 times with a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 50.0
Subtracting 0 from 14 leaves us with 14.
Bring next digit (4) of the dividend behind the 14 and repeat the process: 144 / 57

Let's proceed to step 5:
When dividing 144 by 57, we get 2 with a remainder of 30.
Use 2 as the next digit of our solution. 
Result so far: 502.0
If we take 114 away from 144, we end up with 30.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 57

Step 6:
57 can be fit into 303 5 times, resulting in a remainder of 18.
Record the quotient 5 as the next digit in the result. 
Result so far: 5025.0
If we take 285 away from 303, we end up 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.

Moving on to step 7:
57 goes into 180 3 times with a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 5025.3
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.

Advancing to step 8:
When dividing 90 by 57, we get 1 with a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 5025.31
Deduct 57 from 90 and we're left 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.

On to step 9:
57 can be fit into 330 5 times, resulting in a remainder of 45.
The next digit of our result is 5. 
Result so far: 5025.315
The remainder is 45 after subtracting 285 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 10:
If we divide 450 by 57, we get 7 and a remainder of 51.
Write down 7 as next digit of the result. 
Result so far: 5025.3157
Subtract 399 from 450 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 11:
The number 57 fits into 510 8 times, leaving a remainder of 54.
Use 8 as the next digit of our solution. 
Result so far: 5025.31578
The remainder is 54 after subtracting 456 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 12:
540 divided by 57 is 9 with a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 5025.315789
If we take 513 away from 540, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 13:
57 goes into 270 4 times with a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 5025.3157894
If we take 228 away from 270, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 14:
57 goes into 420 7 times with a remainder of 21.
The next digit of our result is 7. 
Result so far: 5025.31578947
Subtracting 399 from 420 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Our division results in 5025.31578947 with a remaining 2.1e-08.