290440 ÷ 20 
The aim is to understand the frequency of 20 in 290440.

Step 1:
When dividing 2 by 20, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 20

Moving on to step 2:
The number 20 fits into 29 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 20 from 29 to get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 20

Step 3:
20 goes into 90 4 times with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we subtract 80 from 90, we get 10.
Grab the next digit (4) from the dividend, add it to 10, then carry on: 104 / 20

Going ahead to step 4:
If we divide 104 by 20, we get 5 and a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 145.0
If we subtract 100 from 104, we get 4.
Fetch the next digit (4) from the dividend, attach it to 4 and continue: 44 / 20

Advancing to step 5:
20 goes into 44 2 times with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 1452.0
If we subtract 40 from 44, we get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 20

Moving on to step 6:
The number 20 fits into 40 2 times, leaving a remainder of 0.
The next digit of our result is 2. 
Result so far: 14522.0
The remainder is 0 after subtracting 40 from 40.
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 7:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 14522.0
If we subtract 0 from 0, 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.

Going ahead to step 8:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 14522.0
Subtracting 0 from 0 leaves us 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.

The quotient of the division is 14522.0, and the remainder is 0.0.