12933291 ÷ 872 
The aim is to understand the frequency of 872 in 12933291.

On to step 1:
When dividing 1 by 872, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 872

On to step 2:
12 divided by 872 is 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Grab the next digit (9) from the dividend, add it to 12, then carry on: 129 / 872

Advancing to step 3:
872 goes into 129 0 times with a remainder of 129.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 129 after subtracting 0 from 129.
Grab the next digit (3) from the dividend, add it to 129, then carry on: 1293 / 872

Step 4:
The number 872 fits into 1293 1 times, leaving a remainder of 421.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 872 from 1293 to get 421.
Append the next digit (3) from the dividend to 421 and continue with: 4213 / 872

On to step 5:
872 can be fit into 4213 4 times, resulting in a remainder of 725.
Write down 4 as next digit of the result. 
Result so far: 14.0
Deduct 3488 from 4213 and we're left with 725.
Bring next digit (2) of the dividend behind the 725 and repeat the process: 7252 / 872

Let's proceed to step 6:
When dividing 7252 by 872, we get 8 with a remainder of 276.
Write down 8 as next digit of the result. 
Result so far: 148.0
Deduct 6976 from 7252 and we're left with 276.
Grab the next digit (9) from the dividend, add it to 276, then carry on: 2769 / 872

Step 7:
872 can be fit into 2769 3 times, resulting in a remainder of 153.
The next digit of our result is 3. 
Result so far: 1483.0
If we take 2616 away from 2769, we end up with 153.
Bring next digit (1) of the dividend behind the 153 and repeat the process: 1531 / 872

Step 8:
1531 divided by 872 is 1 with a remainder of 659.
The next digit of our result is 1. 
Result so far: 14831.0
The remainder is 659 after subtracting 872 from 1531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6590, and continue the process.

On to step 9:
872 goes into 6590 7 times with a remainder of 486.
Write down 7 as next digit of the result. 
Result so far: 14831.7
Deduct 6104 from 6590 and we're left with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Step 10:
The number 872 fits into 4860 5 times, leaving a remainder of 500.
Record the quotient 5 as the next digit in the result. 
Result so far: 14831.75
Subtracting 4360 from 4860 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Let's proceed to step 11:
When dividing 5000 by 872, we get 5 with a remainder of 640.
Write down 5 as next digit of the result. 
Result so far: 14831.755
If we take 4360 away from 5000, we end up with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

The final result is 14831.755 with a remainder of 0.064.