We look at the division of 9310409 by 853 
The aim is to understand the frequency of 853 in 9310409.

Step 1:
The number 853 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 853

On to step 2:
When dividing 93 by 853, we get 0 with a remainder of 93.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 93 and we're left with 93.
Grab the next digit (1) from the dividend, add it to 93, then carry on: 931 / 853

Advancing to step 3:
If we divide 931 by 853, we get 1 and a remainder of 78.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 853 from 931 to get 78.
Grab the next digit (0) from the dividend, add it to 78, then carry on: 780 / 853

Let's proceed to step 4:
The number 853 fits into 780 0 times, leaving a remainder of 780.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 780 leaves us with 780.
Include the next digit (4) from the dividend after 780, then repeat: 7804 / 853

Going ahead to step 5:
7804 divided by 853 is 9 with a remainder of 127.
The next digit of our result is 9. 
Result so far: 109.0
The remainder is 127 after subtracting 7677 from 7804.
Fetch the next digit (0) from the dividend, attach it to 127 and continue: 1270 / 853

Step 6:
853 can be fit into 1270 1 times, resulting in a remainder of 417.
The next digit of our result is 1. 
Result so far: 1091.0
The remainder is 417 after subtracting 853 from 1270.
Append the next digit (9) from the dividend to 417 and continue with: 4179 / 853

Moving on to step 7:
The number 853 fits into 4179 4 times, leaving a remainder of 767.
Write down 4 as next digit of the result. 
Result so far: 10914.0
Deduct 3412 from 4179 and we're left with 767.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7670, and continue the process.

Going ahead to step 8:
7670 divided by 853 is 8 with a remainder of 846.
Write down 8 as next digit of the result. 
Result so far: 10914.8
Subtracting 6824 from 7670 leaves us with 846.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8460, and continue the process.

Step 9:
The number 853 fits into 8460 9 times, leaving a remainder of 783.
The next digit of our result is 9. 
Result so far: 10914.89
If we subtract 7677 from 8460, we get 783.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7830, and continue the process.

Moving on to step 10:
If we divide 7830 by 853, we get 9 and a remainder of 153.
Write down 9 as next digit of the result. 
Result so far: 10914.899
Subtract 7677 from 7830 to get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

The final result is 10914.899 with a remainder of 0.0153.