We look at the division of 18015106 by 871 
The aim is to understand the frequency of 871 in 18015106.

Step 1:
If we divide 1 by 871, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 871

Advancing to step 2:
871 can be fit into 18 0 times, resulting in a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 18 after subtracting 0 from 18.
Take the next digit (0) from the dividend and append it to 18, then repeat: 180 / 871

Advancing to step 3:
If we divide 180 by 871, we get 0 and a remainder of 180.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 180, we get 180.
Fetch the next digit (1) from the dividend, attach it to 180 and continue: 1801 / 871

Advancing to step 4:
When dividing 1801 by 871, we get 2 with a remainder of 59.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 1742 away from 1801, we end up with 59.
Fetch the next digit (5) from the dividend, attach it to 59 and continue: 595 / 871

Moving on to step 5:
871 goes into 595 0 times with a remainder of 595.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Deduct 0 from 595 and we're left with 595.
Fetch the next digit (1) from the dividend, attach it to 595 and continue: 5951 / 871

Step 6:
The number 871 fits into 5951 6 times, leaving a remainder of 725.
The number 6 becomes the next digit in our result. 
Result so far: 206.0
The remainder is 725 after subtracting 5226 from 5951.
Append the next digit (0) from the dividend to 725 and continue with: 7250 / 871

Going ahead to step 7:
871 goes into 7250 8 times with a remainder of 282.
The number 8 becomes the next digit in our result. 
Result so far: 2068.0
The remainder is 282 after subtracting 6968 from 7250.
Grab the next digit (6) from the dividend, add it to 282, then carry on: 2826 / 871

On to step 8:
The number 871 fits into 2826 3 times, leaving a remainder of 213.
Use 3 as the next digit of our solution. 
Result so far: 20683.0
Subtract 2613 from 2826 to get 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Going ahead to step 9:
2130 divided by 871 is 2 with a remainder of 388.
Write down 2 as next digit of the result. 
Result so far: 20683.2
Deduct 1742 from 2130 and we're left with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

On to step 10:
871 can be fit into 3880 4 times, resulting in a remainder of 396.
The next digit of our result is 4. 
Result so far: 20683.24
Subtracting 3484 from 3880 leaves us with 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Let's proceed to step 11:
If we divide 3960 by 871, we get 4 and a remainder of 476.
The next digit of our result is 4. 
Result so far: 20683.244
Subtracting 3484 from 3960 leaves us with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

In conclusion, the division gives 20683.244 with a balance of 0.0476.