We look at the division of 2852120 by 871 
The aim is to understand the frequency of 871 in 2852120.

Let's proceed to step 1:
The number 871 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 871

Going ahead to step 2:
If we divide 28 by 871, we get 0 and a remainder of 28.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Bring next digit (5) of the dividend behind the 28 and repeat the process: 285 / 871

Let's proceed to step 3:
871 can be fit into 285 0 times, resulting in a remainder of 285.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 285 leaves us with 285.
Include the next digit (2) from the dividend after 285, then repeat: 2852 / 871

Moving on to step 4:
The number 871 fits into 2852 3 times, leaving a remainder of 239.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 2613 from 2852, we get 239.
Fetch the next digit (1) from the dividend, attach it to 239 and continue: 2391 / 871

Going ahead to step 5:
When dividing 2391 by 871, we get 2 with a remainder of 649.
Use 2 as the next digit of our solution. 
Result so far: 32.0
Subtract 1742 from 2391 to get 649.
Take the next digit (2) from the dividend and append it to 649, then repeat: 6492 / 871

Advancing to step 6:
When dividing 6492 by 871, we get 7 with a remainder of 395.
The next digit of our result is 7. 
Result so far: 327.0
Deduct 6097 from 6492 and we're left with 395.
Grab the next digit (0) from the dividend, add it to 395, then carry on: 3950 / 871

Advancing to step 7:
3950 divided by 871 is 4 with a remainder of 466.
Use 4 as the next digit of our solution. 
Result so far: 3274.0
Deduct 3484 from 3950 and we're left with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Going ahead to step 8:
When dividing 4660 by 871, we get 5 with a remainder of 305.
Put 5 as the next digit of the answer. 
Result so far: 3274.5
Subtract 4355 from 4660 to get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Going ahead to step 9:
3050 divided by 871 is 3 with a remainder of 437.
Use 3 as the next digit of our solution. 
Result so far: 3274.53
Deduct 2613 from 3050 and we're left with 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

On to step 10:
871 goes into 4370 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 3274.535
Subtracting 4355 from 4370 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 11:
If we divide 150 by 871, we get 0 and a remainder of 150.
Write down 0 as next digit of the result. 
Result so far: 3274.535
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Going ahead to step 12:
When dividing 1500 by 871, we get 1 with a remainder of 629.
Put 1 as the next digit of the answer. 
Result so far: 3274.53501
Subtracting 871 from 1500 leaves us with 629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6290, and continue the process.

Going ahead to step 13:
When dividing 6290 by 871, we get 7 with a remainder of 193.
Record the quotient 7 as the next digit in the result. 
Result so far: 3274.535017
Deduct 6097 from 6290 and we're left with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Let's proceed to step 14:
1930 divided by 871 is 2 with a remainder of 188.
The number 2 becomes the next digit in our result. 
Result so far: 3274.5350172
If we subtract 1742 from 1930, we get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

On to step 15:
The number 871 fits into 1880 2 times, leaving a remainder of 138.
Use 2 as the next digit of our solution. 
Result so far: 3274.53501722
If we take 1742 away from 1880, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

In conclusion, the division gives 3274.53501722 with a balance of 1.38e-07.