We look at the division of 25382313 by 811 
The aim is to understand the frequency of 811 in 25382313.

Going ahead to step 1:
If we divide 2 by 811, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 811

Let's proceed to step 2:
811 goes into 25 0 times with a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Include the next digit (3) from the dividend after 25, then repeat: 253 / 811

Advancing to step 3:
The number 811 fits into 253 0 times, leaving a remainder of 253.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 253 after subtracting 0 from 253.
Include the next digit (8) from the dividend after 253, then repeat: 2538 / 811

Going ahead to step 4:
811 goes into 2538 3 times with a remainder of 105.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 105 after subtracting 2433 from 2538.
Fetch the next digit (2) from the dividend, attach it to 105 and continue: 1052 / 811

On to step 5:
1052 divided by 811 is 1 with a remainder of 241.
The next digit of our result is 1. 
Result so far: 31.0
If we take 811 away from 1052, we end up with 241.
Take the next digit (3) from the dividend and append it to 241, then repeat: 2413 / 811

On to step 6:
If we divide 2413 by 811, we get 2 and a remainder of 791.
Record the quotient 2 as the next digit in the result. 
Result so far: 312.0
Subtract 1622 from 2413 to get 791.
Fetch the next digit (1) from the dividend, attach it to 791 and continue: 7911 / 811

Step 7:
If we divide 7911 by 811, we get 9 and a remainder of 612.
Put 9 as the next digit of the answer. 
Result so far: 3129.0
Subtracting 7299 from 7911 leaves us with 612.
Include the next digit (3) from the dividend after 612, then repeat: 6123 / 811

Let's proceed to step 8:
The number 811 fits into 6123 7 times, leaving a remainder of 446.
Use 7 as the next digit of our solution. 
Result so far: 31297.0
Subtract 5677 from 6123 to get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Advancing to step 9:
811 can be fit into 4460 5 times, resulting in a remainder of 405.
The number 5 becomes the next digit in our result. 
Result so far: 31297.5
Subtracting 4055 from 4460 leaves us with 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Advancing to step 10:
If we divide 4050 by 811, we get 4 and a remainder of 806.
Put 4 as the next digit of the answer. 
Result so far: 31297.54
If we subtract 3244 from 4050, we get 806.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8060, and continue the process.

On to step 11:
811 goes into 8060 9 times with a remainder of 761.
The number 9 becomes the next digit in our result. 
Result so far: 31297.549
Deduct 7299 from 8060 and we're left with 761.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7610, and continue the process.

On to step 12:
When dividing 7610 by 811, we get 9 with a remainder of 311.
Use 9 as the next digit of our solution. 
Result so far: 31297.5499
Subtracting 7299 from 7610 leaves us with 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

The final result is 31297.5499 with a remainder of 0.00311.