We divide 159820 by 2
The aim is to understand the frequency of 2 in 159820.

Step 1:
1 divided by 2 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 2

Step 2:
15 divided by 2 is 7 with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 14 from 15, we get 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 2

Let's proceed to step 3:
2 goes into 19 9 times with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 79.0
Deduct 18 from 19 and we're left with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 2

Advancing to step 4:
The number 2 fits into 18 9 times, leaving a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 799.0
If we subtract 18 from 18, we get 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 2

On to step 5:
When dividing 2 by 2, we get 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 7991.0
If we subtract 2 from 2, we get 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 2

Step 6:
The number 2 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 79910.0
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.

Advancing to step 7:
When dividing 0 by 2, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 79910.0
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.

Step 8:
2 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 79910.0
Deduct 0 from 0 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.

Our division results in 79910.0 with a remaining 0.0.