We divide 80423911 by 853
The aim is to understand the frequency of 853 in 80423911.

On to step 1:
853 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 853

On to step 2:
When dividing 80 by 853, we get 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Include the next digit (4) from the dividend after 80, then repeat: 804 / 853

Let's proceed to step 3:
The number 853 fits into 804 0 times, leaving a remainder of 804.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 804 and we're left with 804.
Append the next digit (2) from the dividend to 804 and continue with: 8042 / 853

Going ahead to step 4:
853 goes into 8042 9 times with a remainder of 365.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 7677 from 8042 and we're left with 365.
Fetch the next digit (3) from the dividend, attach it to 365 and continue: 3653 / 853

Going ahead to step 5:
853 goes into 3653 4 times with a remainder of 241.
Write down 4 as next digit of the result. 
Result so far: 94.0
The remainder is 241 after subtracting 3412 from 3653.
Grab the next digit (9) from the dividend, add it to 241, then carry on: 2419 / 853

Moving on to step 6:
853 goes into 2419 2 times with a remainder of 713.
Use 2 as the next digit of our solution. 
Result so far: 942.0
Subtracting 1706 from 2419 leaves us with 713.
Include the next digit (1) from the dividend after 713, then repeat: 7131 / 853

Let's proceed to step 7:
853 goes into 7131 8 times with a remainder of 307.
Write down 8 as next digit of the result. 
Result so far: 9428.0
Deduct 6824 from 7131 and we're left with 307.
Bring next digit (1) of the dividend behind the 307 and repeat the process: 3071 / 853

Moving on to step 8:
If we divide 3071 by 853, we get 3 and a remainder of 512.
The next digit of our result is 3. 
Result so far: 94283.0
Deduct 2559 from 3071 and we're left with 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Moving on to step 9:
853 can be fit into 5120 6 times, resulting in a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 94283.6
Subtract 5118 from 5120 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
When dividing 20 by 853, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 94283.6
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 11:
200 divided by 853 is 0 with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 94283.6
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final result is 94283.6 with a remainder of 0.02.