43218571 ÷ 856 
The aim is to understand the frequency of 856 in 43218571.

Moving on to step 1:
856 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 856

Advancing to step 2:
When dividing 43 by 856, we get 0 with a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Include the next digit (2) from the dividend after 43, then repeat: 432 / 856

Going ahead to step 3:
856 goes into 432 0 times with a remainder of 432.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 432 leaves us with 432.
Grab the next digit (1) from the dividend, add it to 432, then carry on: 4321 / 856

Moving on to step 4:
The number 856 fits into 4321 5 times, leaving a remainder of 41.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 4280 from 4321, we get 41.
Include the next digit (8) from the dividend after 41, then repeat: 418 / 856

On to step 5:
856 goes into 418 0 times with a remainder of 418.
Use 0 as the next digit of our solution. 
Result so far: 50.0
Deduct 0 from 418 and we're left with 418.
Include the next digit (5) from the dividend after 418, then repeat: 4185 / 856

On to step 6:
4185 divided by 856 is 4 with a remainder of 761.
The next digit of our result is 4. 
Result so far: 504.0
Subtracting 3424 from 4185 leaves us with 761.
Bring next digit (7) of the dividend behind the 761 and repeat the process: 7617 / 856

Let's proceed to step 7:
856 can be fit into 7617 8 times, resulting in a remainder of 769.
The number 8 becomes the next digit in our result. 
Result so far: 5048.0
If we take 6848 away from 7617, we end up with 769.
Grab the next digit (1) from the dividend, add it to 769, then carry on: 7691 / 856

Step 8:
856 goes into 7691 8 times with a remainder of 843.
The next digit of our result is 8. 
Result so far: 50488.0
If we subtract 6848 from 7691, we get 843.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8430, and continue the process.

Step 9:
856 can be fit into 8430 9 times, resulting in a remainder of 726.
Put 9 as the next digit of the answer. 
Result so far: 50488.9
Subtracting 7704 from 8430 leaves us with 726.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7260, and continue the process.

Advancing to step 10:
7260 divided by 856 is 8 with a remainder of 412.
Put 8 as the next digit of the answer. 
Result so far: 50488.98
Deduct 6848 from 7260 and we're left with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Moving on to step 11:
The number 856 fits into 4120 4 times, leaving a remainder of 696.
Use 4 as the next digit of our solution. 
Result so far: 50488.984
If we take 3424 away from 4120, we end up with 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Step 12:
When dividing 6960 by 856, we get 8 with a remainder of 112.
Write down 8 as next digit of the result. 
Result so far: 50488.9848
Deduct 6848 from 6960 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Moving on to step 13:
856 can be fit into 1120 1 times, resulting in a remainder of 264.
The number 1 becomes the next digit in our result. 
Result so far: 50488.98481
Deduct 856 from 1120 and we're left with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Going ahead to step 14:
856 goes into 2640 3 times with a remainder of 72.
Write down 3 as next digit of the result. 
Result so far: 50488.984813
Subtract 2568 from 2640 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 15:
856 goes into 720 0 times with a remainder of 720.
The number 0 becomes the next digit in our result. 
Result so far: 50488.984813
Subtracting 0 from 720 leaves us with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Moving on to step 16:
856 goes into 7200 8 times with a remainder of 352.
Use 8 as the next digit of our solution. 
Result so far: 50488.98481308
The remainder is 352 after subtracting 6848 from 7200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

The final result is 50488.98481308 with a remainder of 3.52e-07.