13830815 ÷ 871 
The aim is to understand the frequency of 871 in 13830815.

Moving on to step 1:
1 divided by 871 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 871

Let's proceed to step 2:
871 goes into 13 0 times with a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 871

Going ahead to step 3:
When dividing 138 by 871, we get 0 with a remainder of 138.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 138 after subtracting 0 from 138.
Take the next digit (3) from the dividend and append it to 138, then repeat: 1383 / 871

Step 4:
When dividing 1383 by 871, we get 1 with a remainder of 512.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 871 from 1383 to get 512.
Take the next digit (0) from the dividend and append it to 512, then repeat: 5120 / 871

On to step 5:
871 can be fit into 5120 5 times, resulting in a remainder of 765.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 4355 away from 5120, we end up with 765.
Grab the next digit (8) from the dividend, add it to 765, then carry on: 7658 / 871

Going ahead to step 6:
871 goes into 7658 8 times with a remainder of 690.
Write down 8 as next digit of the result. 
Result so far: 158.0
Subtract 6968 from 7658 to get 690.
Append the next digit (1) from the dividend to 690 and continue with: 6901 / 871

Going ahead to step 7:
871 can be fit into 6901 7 times, resulting in a remainder of 804.
Write down 7 as next digit of the result. 
Result so far: 1587.0
If we take 6097 away from 6901, we end up with 804.
Bring next digit (5) of the dividend behind the 804 and repeat the process: 8045 / 871

Moving on to step 8:
8045 divided by 871 is 9 with a remainder of 206.
Write down 9 as next digit of the result. 
Result so far: 15879.0
Subtract 7839 from 8045 to get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Let's proceed to step 9:
871 goes into 2060 2 times with a remainder of 318.
The next digit of our result is 2. 
Result so far: 15879.2
The remainder is 318 after subtracting 1742 from 2060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Let's proceed to step 10:
871 goes into 3180 3 times with a remainder of 567.
Write down 3 as next digit of the result. 
Result so far: 15879.23
If we take 2613 away from 3180, we end up with 567.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5670, and continue the process.

Step 11:
When dividing 5670 by 871, we get 6 with a remainder of 444.
Write down 6 as next digit of the result. 
Result so far: 15879.236
Subtracting 5226 from 5670 leaves us with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Advancing to step 12:
The number 871 fits into 4440 5 times, leaving a remainder of 85.
Use 5 as the next digit of our solution. 
Result so far: 15879.2365
If we subtract 4355 from 4440, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Step 13:
850 divided by 871 is 0 with a remainder of 850.
The number 0 becomes the next digit in our result. 
Result so far: 15879.2365
The remainder is 850 after subtracting 0 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8500, and continue the process.

Going ahead to step 14:
The number 871 fits into 8500 9 times, leaving a remainder of 661.
The number 9 becomes the next digit in our result. 
Result so far: 15879.236509
Subtract 7839 from 8500 to get 661.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6610, and continue the process.

Advancing to step 15:
The number 871 fits into 6610 7 times, leaving a remainder of 513.
The number 7 becomes the next digit in our result. 
Result so far: 15879.2365097
If we take 6097 away from 6610, we end up with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Advancing to step 16:
871 goes into 5130 5 times with a remainder of 775.
Use 5 as the next digit of our solution. 
Result so far: 15879.23650975
Subtract 4355 from 5130 to get 775.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7750, and continue the process.

Our division results in 15879.23650975 with a remaining 7.75e-07.