43517557 divided by 871 
The aim is to understand the frequency of 871 in 43517557.

Let's proceed to step 1:
4 divided by 871 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 871

Advancing to step 2:
If we divide 43 by 871, we get 0 and a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Bring next digit (5) of the dividend behind the 43 and repeat the process: 435 / 871

Moving on to step 3:
435 divided by 871 is 0 with a remainder of 435.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 435 after subtracting 0 from 435.
Fetch the next digit (1) from the dividend, attach it to 435 and continue: 4351 / 871

Let's proceed to step 4:
871 goes into 4351 4 times with a remainder of 867.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 3484 from 4351 to get 867.
Include the next digit (7) from the dividend after 867, then repeat: 8677 / 871

Advancing to step 5:
When dividing 8677 by 871, we get 9 with a remainder of 838.
The next digit of our result is 9. 
Result so far: 49.0
Subtract 7839 from 8677 to get 838.
Bring next digit (5) of the dividend behind the 838 and repeat the process: 8385 / 871

Advancing to step 6:
If we divide 8385 by 871, we get 9 and a remainder of 546.
Use 9 as the next digit of our solution. 
Result so far: 499.0
The remainder is 546 after subtracting 7839 from 8385.
Take the next digit (5) from the dividend and append it to 546, then repeat: 5465 / 871

Advancing to step 7:
871 goes into 5465 6 times with a remainder of 239.
Use 6 as the next digit of our solution. 
Result so far: 4996.0
If we subtract 5226 from 5465, we get 239.
Include the next digit (7) from the dividend after 239, then repeat: 2397 / 871

Let's proceed to step 8:
871 can be fit into 2397 2 times, resulting in a remainder of 655.
The next digit of our result is 2. 
Result so far: 49962.0
Subtracting 1742 from 2397 leaves us with 655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Moving on to step 9:
When dividing 6550 by 871, we get 7 with a remainder of 453.
The number 7 becomes the next digit in our result. 
Result so far: 49962.7
The remainder is 453 after subtracting 6097 from 6550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4530, and continue the process.

Step 10:
871 can be fit into 4530 5 times, resulting in a remainder of 175.
Record the quotient 5 as the next digit in the result. 
Result so far: 49962.75
Subtract 4355 from 4530 to get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Let's proceed to step 11:
1750 divided by 871 is 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 49962.752
Subtract 1742 from 1750 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 12:
The number 871 fits into 80 0 times, leaving a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 49962.752
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 13:
800 divided by 871 is 0 with a remainder of 800.
The number 0 becomes the next digit in our result. 
Result so far: 49962.752
If we take 0 away from 800, we end up with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

The quotient of the division is 49962.752, and the remainder is 0.0008.