Let's divide 305865 by 53
The aim is to understand the frequency of 53 in 305865.

On to step 1:
53 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 53

Step 2:
30 divided by 53 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Grab the next digit (5) from the dividend, add it to 30, then carry on: 305 / 53

Let's proceed to step 3:
305 divided by 53 is 5 with a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 40 after subtracting 265 from 305.
Grab the next digit (8) from the dividend, add it to 40, then carry on: 408 / 53

Going ahead to step 4:
If we divide 408 by 53, we get 7 and a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 57.0
The remainder is 37 after subtracting 371 from 408.
Append the next digit (6) from the dividend to 37 and continue with: 376 / 53

Going ahead to step 5:
When dividing 376 by 53, we get 7 with a remainder of 5.
The next digit of our result is 7. 
Result so far: 577.0
If we take 371 away from 376, we end up with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 53

Going ahead to step 6:
53 goes into 55 1 times with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 5771.0
If we take 53 away from 55, we end up 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.

Advancing to step 7:
20 divided by 53 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 5771.0
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
The number 53 fits into 200 3 times, leaving a remainder of 41.
Put 3 as the next digit of the answer. 
Result so far: 5771.03
Subtracting 159 from 200 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 9:
If we divide 410 by 53, we get 7 and a remainder of 39.
Use 7 as the next digit of our solution. 
Result so far: 5771.037
If we subtract 371 from 410, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 10:
53 goes into 390 7 times with a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 5771.0377
Subtract 371 from 390 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final outcome is 5771.0377, with a leftover of 0.00019.