91804007 divided by 871 
The aim is to understand the frequency of 871 in 91804007.

Going ahead to step 1:
If we divide 9 by 871, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 871

Moving on to step 2:
871 can be fit into 91 0 times, resulting in a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Take the next digit (8) from the dividend and append it to 91, then repeat: 918 / 871

Advancing to step 3:
871 goes into 918 1 times with a remainder of 47.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 47 after subtracting 871 from 918.
Grab the next digit (0) from the dividend, add it to 47, then carry on: 470 / 871

Moving on to step 4:
If we divide 470 by 871, we get 0 and a remainder of 470.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 470 to get 470.
Append the next digit (4) from the dividend to 470 and continue with: 4704 / 871

Advancing to step 5:
871 can be fit into 4704 5 times, resulting in a remainder of 349.
Put 5 as the next digit of the answer. 
Result so far: 105.0
Deduct 4355 from 4704 and we're left with 349.
Take the next digit (0) from the dividend and append it to 349, then repeat: 3490 / 871

Step 6:
871 goes into 3490 4 times with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 1054.0
Subtracting 3484 from 3490 leaves us with 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 871

Going ahead to step 7:
871 goes into 60 0 times with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 10540.0
Subtract 0 from 60 to get 60.
Take the next digit (7) from the dividend and append it to 60, then repeat: 607 / 871

Moving on to step 8:
The number 871 fits into 607 0 times, leaving a remainder of 607.
Use 0 as the next digit of our solution. 
Result so far: 105400.0
If we subtract 0 from 607, we get 607.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6070, and continue the process.

Let's proceed to step 9:
871 goes into 6070 6 times with a remainder of 844.
Record the quotient 6 as the next digit in the result. 
Result so far: 105400.6
Deduct 5226 from 6070 and we're left with 844.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8440, and continue the process.

Step 10:
When dividing 8440 by 871, we get 9 with a remainder of 601.
Record the quotient 9 as the next digit in the result. 
Result so far: 105400.69
Subtracting 7839 from 8440 leaves us with 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6010, and continue the process.

Going ahead to step 11:
When dividing 6010 by 871, we get 6 with a remainder of 784.
Write down 6 as next digit of the result. 
Result so far: 105400.696
Subtract 5226 from 6010 to get 784.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7840, and continue the process.

Let's proceed to step 12:
The number 871 fits into 7840 9 times, leaving a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 105400.6969
The remainder is 1 after subtracting 7839 from 7840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 13:
871 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 105400.6969
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
If we divide 100 by 871, we get 0 and a remainder of 100.
Use 0 as the next digit of our solution. 
Result so far: 105400.6969
Deduct 0 from 100 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

In conclusion, the division gives 105400.6969 with a balance of 1e-05.