We're dividing 312568 by 20 
The aim is to understand the frequency of 20 in 312568.

Let's proceed to step 1:
When dividing 3 by 20, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 20

Advancing to step 2:
The number 20 fits into 31 1 times, leaving a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 20 from 31, we get 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 20

Going ahead to step 3:
The number 20 fits into 112 5 times, leaving a remainder of 12.
Write down 5 as next digit of the result. 
Result so far: 15.0
The remainder is 12 after subtracting 100 from 112.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 20

Moving on to step 4:
20 can be fit into 125 6 times, resulting in a remainder of 5.
Use 6 as the next digit of our solution. 
Result so far: 156.0
Subtracting 120 from 125 leaves us with 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 20

Going ahead to step 5:
56 divided by 20 is 2 with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 1562.0
If we take 40 away from 56, we end up with 16.
Grab the next digit (8) from the dividend, add it to 16, then carry on: 168 / 20

Step 6:
The number 20 fits into 168 8 times, leaving a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 15628.0
Deduct 160 from 168 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
20 goes into 80 4 times with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 15628.4
Deduct 80 from 80 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
If we divide 0 by 20, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 15628.4
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15628.4
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 15628.4, with a leftover of 0.0.