850872 ÷ 53 
The aim is to understand the frequency of 53 in 850872.

Let's proceed to step 1:
When dividing 8 by 53, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 53

Going ahead to step 2:
53 goes into 85 1 times with a remainder of 32.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 32 after subtracting 53 from 85.
Grab the next digit (0) from the dividend, add it to 32, then carry on: 320 / 53

Step 3:
If we divide 320 by 53, we get 6 and a remainder of 2.
The next digit of our result is 6. 
Result so far: 16.0
The remainder is 2 after subtracting 318 from 320.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 53

Going ahead to step 4:
When dividing 28 by 53, we get 0 with a remainder of 28.
The next digit of our result is 0. 
Result so far: 160.0
Subtract 0 from 28 to get 28.
Include the next digit (7) from the dividend after 28, then repeat: 287 / 53

Advancing to step 5:
287 divided by 53 is 5 with a remainder of 22.
Record the quotient 5 as the next digit in the result. 
Result so far: 1605.0
The remainder is 22 after subtracting 265 from 287.
Take the next digit (2) from the dividend and append it to 22, then repeat: 222 / 53

Moving on to step 6:
222 divided by 53 is 4 with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 16054.0
Subtracting 212 from 222 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
100 divided by 53 is 1 with a remainder of 47.
The next digit of our result is 1. 
Result so far: 16054.1
If we subtract 53 from 100, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 8:
The number 53 fits into 470 8 times, leaving a remainder of 46.
The next digit of our result is 8. 
Result so far: 16054.18
Deduct 424 from 470 and we're left 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:
53 can be fit into 460 8 times, resulting in a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 16054.188
If we take 424 away from 460, we end up 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 result is 16054.188 with a remainder of 0.0036.