We look at the division of 287891 by 53 
The aim is to understand the frequency of 53 in 287891.

Going ahead to step 1:
53 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 53

Advancing to step 2:
28 divided by 53 is 0 with a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 28, we get 28.
Append the next digit (7) from the dividend to 28 and continue with: 287 / 53

Let's proceed to step 3:
287 divided by 53 is 5 with a remainder of 22.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 265 from 287 to get 22.
Grab the next digit (8) from the dividend, add it to 22, then carry on: 228 / 53

On to step 4:
228 divided by 53 is 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 54.0
Deduct 212 from 228 and we're left with 16.
Take the next digit (9) from the dividend and append it to 16, then repeat: 169 / 53

Advancing to step 5:
If we divide 169 by 53, we get 3 and a remainder of 10.
The next digit of our result is 3. 
Result so far: 543.0
If we subtract 159 from 169, we get 10.
Append the next digit (1) from the dividend to 10 and continue with: 101 / 53

Advancing to step 6:
53 can be fit into 101 1 times, resulting in a remainder of 48.
The next digit of our result is 1. 
Result so far: 5431.0
The remainder is 48 after subtracting 53 from 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 7:
53 goes into 480 9 times with a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 5431.9
Deduct 477 from 480 and we're left with 3.
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:
The number 53 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 5431.9
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
If we divide 300 by 53, we get 5 and a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 5431.905
If we take 265 away from 300, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 10:
53 can be fit into 350 6 times, resulting in a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 5431.9056
If we take 318 away from 350, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 11:
The number 53 fits into 320 6 times, leaving a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 5431.90566
Deduct 318 from 320 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

In conclusion, the division gives 5431.90566 with a balance of 2e-06.