31715920 ÷ 412 
The aim is to understand the frequency of 412 in 31715920.

Let's proceed to step 1:
The number 412 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 412

Moving on to step 2:
412 can be fit into 31 0 times, resulting in a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 31, we get 31.
Bring next digit (7) of the dividend behind the 31 and repeat the process: 317 / 412

Let's proceed to step 3:
If we divide 317 by 412, we get 0 and a remainder of 317.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 317 and we're left with 317.
Grab the next digit (1) from the dividend, add it to 317, then carry on: 3171 / 412

Advancing to step 4:
412 can be fit into 3171 7 times, resulting in a remainder of 287.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 2884 from 3171 and we're left with 287.
Grab the next digit (5) from the dividend, add it to 287, then carry on: 2875 / 412

Step 5:
412 can be fit into 2875 6 times, resulting in a remainder of 403.
Write down 6 as next digit of the result. 
Result so far: 76.0
Deduct 2472 from 2875 and we're left with 403.
Append the next digit (9) from the dividend to 403 and continue with: 4039 / 412

Advancing to step 6:
412 can be fit into 4039 9 times, resulting in a remainder of 331.
Use 9 as the next digit of our solution. 
Result so far: 769.0
Subtracting 3708 from 4039 leaves us with 331.
Include the next digit (2) from the dividend after 331, then repeat: 3312 / 412

Let's proceed to step 7:
The number 412 fits into 3312 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 7698.0
If we take 3296 away from 3312, we end up with 16.
Take the next digit (0) from the dividend and append it to 16, then repeat: 160 / 412

Moving on to step 8:
412 can be fit into 160 0 times, resulting in a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 76980.0
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 9:
412 goes into 1600 3 times with a remainder of 364.
Record the quotient 3 as the next digit in the result. 
Result so far: 76980.3
Subtracting 1236 from 1600 leaves us with 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

On to step 10:
If we divide 3640 by 412, we get 8 and a remainder of 344.
Record the quotient 8 as the next digit in the result. 
Result so far: 76980.38
Subtract 3296 from 3640 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Going ahead to step 11:
When dividing 3440 by 412, we get 8 with a remainder of 144.
Write down 8 as next digit of the result. 
Result so far: 76980.388
Subtracting 3296 from 3440 leaves us with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

The final result is 76980.388 with a remainder of 0.0144.