We divide 628596 by 20
The aim is to understand the frequency of 20 in 628596.

Let's proceed to step 1:
When dividing 6 by 20, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 20

Let's proceed to step 2:
When dividing 62 by 20, we get 3 with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 60 away from 62, we end up with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 20

On to step 3:
20 can be fit into 28 1 times, resulting in a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtracting 20 from 28 leaves us with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 20

Step 4:
The number 20 fits into 85 4 times, leaving a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 314.0
Deduct 80 from 85 and we're left with 5.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 20

Step 5:
If we divide 59 by 20, we get 2 and a remainder of 19.
Use 2 as the next digit of our solution. 
Result so far: 3142.0
Subtract 40 from 59 to get 19.
Fetch the next digit (6) from the dividend, attach it to 19 and continue: 196 / 20

Step 6:
196 divided by 20 is 9 with a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 31429.0
The remainder is 16 after subtracting 180 from 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
20 can be fit into 160 8 times, resulting in a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 31429.8
If we subtract 160 from 160, we 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.

Step 8:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 31429.8
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 31429.8
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 31429.8, with a leftover of 0.0.