20491342 divided by 871 
The aim is to understand the frequency of 871 in 20491342.

Advancing to step 1:
When dividing 2 by 871, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 871

On to step 2:
871 can be fit into 20 0 times, resulting in a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Fetch the next digit (4) from the dividend, attach it to 20 and continue: 204 / 871

Advancing to step 3:
871 goes into 204 0 times with a remainder of 204.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 204 after subtracting 0 from 204.
Append the next digit (9) from the dividend to 204 and continue with: 2049 / 871

Going ahead to step 4:
871 goes into 2049 2 times with a remainder of 307.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1742 from 2049 to get 307.
Append the next digit (1) from the dividend to 307 and continue with: 3071 / 871

Step 5:
871 can be fit into 3071 3 times, resulting in a remainder of 458.
Write down 3 as next digit of the result. 
Result so far: 23.0
If we subtract 2613 from 3071, we get 458.
Grab the next digit (3) from the dividend, add it to 458, then carry on: 4583 / 871

Moving on to step 6:
The number 871 fits into 4583 5 times, leaving a remainder of 228.
Write down 5 as next digit of the result. 
Result so far: 235.0
Deduct 4355 from 4583 and we're left with 228.
Grab the next digit (4) from the dividend, add it to 228, then carry on: 2284 / 871

Going ahead to step 7:
The number 871 fits into 2284 2 times, leaving a remainder of 542.
Record the quotient 2 as the next digit in the result. 
Result so far: 2352.0
Subtract 1742 from 2284 to get 542.
Take the next digit (2) from the dividend and append it to 542, then repeat: 5422 / 871

Going ahead to step 8:
5422 divided by 871 is 6 with a remainder of 196.
Write down 6 as next digit of the result. 
Result so far: 23526.0
Deduct 5226 from 5422 and we're left with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Moving on to step 9:
The number 871 fits into 1960 2 times, leaving a remainder of 218.
Record the quotient 2 as the next digit in the result. 
Result so far: 23526.2
The remainder is 218 after subtracting 1742 from 1960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

On to step 10:
If we divide 2180 by 871, we get 2 and a remainder of 438.
Put 2 as the next digit of the answer. 
Result so far: 23526.22
The remainder is 438 after subtracting 1742 from 2180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

The final result is 23526.22 with a remainder of 0.438.