Let's divide 278910 by 20
The aim is to understand the frequency of 20 in 278910.

Advancing to step 1:
2 divided by 20 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 20

Step 2:
27 divided by 20 is 1 with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 20 from 27, we get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 20

Let's proceed to step 3:
20 goes into 78 3 times with a remainder of 18.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Deduct 60 from 78 and we're left with 18.
Include the next digit (9) from the dividend after 18, then repeat: 189 / 20

Going ahead to step 4:
The number 20 fits into 189 9 times, leaving a remainder of 9.
The next digit of our result is 9. 
Result so far: 139.0
Subtracting 180 from 189 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 20

Advancing to step 5:
If we divide 91 by 20, we get 4 and a remainder of 11.
The next digit of our result is 4. 
Result so far: 1394.0
The remainder is 11 after subtracting 80 from 91.
Grab the next digit (0) from the dividend, add it to 11, then carry on: 110 / 20

Let's proceed to step 6:
When dividing 110 by 20, we get 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 13945.0
If we subtract 100 from 110, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
20 goes into 100 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 13945.5
Subtract 100 from 100 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.

Let's proceed to step 8:
20 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 13945.5
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.

Let's proceed to step 9:
0 divided by 20 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 13945.5
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.

After the division, we end up with 13945.5 and a remainder of 0.0.