We look at the division of 918871 by 53 
The aim is to understand the frequency of 53 in 918871.

Advancing to step 1:
9 divided by 53 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 53

Advancing to step 2:
53 can be fit into 91 1 times, resulting in a remainder of 38.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 53 from 91 and we're left with 38.
Grab the next digit (8) from the dividend, add it to 38, then carry on: 388 / 53

On to step 3:
The number 53 fits into 388 7 times, leaving a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 371 from 388, we get 17.
Bring next digit (8) of the dividend behind the 17 and repeat the process: 178 / 53

On to step 4:
The number 53 fits into 178 3 times, leaving a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 173.0
Subtracting 159 from 178 leaves us with 19.
Include the next digit (7) from the dividend after 19, then repeat: 197 / 53

On to step 5:
53 goes into 197 3 times with a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 1733.0
Subtract 159 from 197 to get 38.
Append the next digit (1) from the dividend to 38 and continue with: 381 / 53

Let's proceed to step 6:
The number 53 fits into 381 7 times, leaving a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 17337.0
The remainder is 10 after subtracting 371 from 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
53 can be fit into 100 1 times, resulting in a remainder of 47.
The number 1 becomes the next digit in our result. 
Result so far: 17337.1
If we take 53 away from 100, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 8:
470 divided by 53 is 8 with a remainder of 46.
The number 8 becomes the next digit in our result. 
Result so far: 17337.18
If we take 424 away from 470, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 9:
460 divided by 53 is 8 with a remainder of 36.
The next digit of our result is 8. 
Result so far: 17337.188
Subtracting 424 from 460 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 17337.188, with a leftover of 0.0036.