We're dividing 287849 by 53 
The aim is to understand the frequency of 53 in 287849.

Going ahead to step 1:
53 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 53

Going ahead to step 2:
If we divide 28 by 53, we get 0 and a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 28, we end up with 28.
Grab the next digit (7) from the dividend, add it to 28, then carry on: 287 / 53

Moving on to step 3:
The number 53 fits into 287 5 times, leaving a remainder of 22.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 265 from 287, we get 22.
Take the next digit (8) from the dividend and append it to 22, then repeat: 228 / 53

On to step 4:
The number 53 fits into 228 4 times, leaving a remainder of 16.
The next digit of our result is 4. 
Result so far: 54.0
If we take 212 away from 228, we end up with 16.
Grab the next digit (4) from the dividend, add it to 16, then carry on: 164 / 53

Step 5:
The number 53 fits into 164 3 times, leaving a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 543.0
Subtracting 159 from 164 leaves us with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 53

Going ahead to step 6:
The number 53 fits into 59 1 times, leaving a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 5431.0
Subtracting 53 from 59 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
60 divided by 53 is 1 with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 5431.1
Deduct 53 from 60 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 8:
53 goes into 70 1 times with a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 5431.11
The remainder is 17 after subtracting 53 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

After the division, we end up with 5431.11 and a remainder of 0.017.