30836031 divided by 20 
The aim is to understand the frequency of 20 in 30836031.

Step 1:
If we divide 3 by 20, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 20

Advancing to step 2:
If we divide 30 by 20, we get 1 and a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 20 from 30, we get 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 20

Moving on to step 3:
108 divided by 20 is 5 with a remainder of 8.
The next digit of our result is 5. 
Result so far: 15.0
Subtract 100 from 108 to get 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 20

Moving on to step 4:
If we divide 83 by 20, we get 4 and a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 154.0
If we subtract 80 from 83, we get 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 20

On to step 5:
36 divided by 20 is 1 with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1541.0
Subtracting 20 from 36 leaves us with 16.
Take the next digit (0) from the dividend and append it to 16, then repeat: 160 / 20

Moving on to step 6:
If we divide 160 by 20, we get 8 and a remainder of 0.
The next digit of our result is 8. 
Result so far: 15418.0
The remainder is 0 after subtracting 160 from 160.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 20

Advancing to step 7:
3 divided by 20 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 154180.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 20

Advancing to step 8:
When dividing 31 by 20, we get 1 with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 1541801.0
Subtracting 20 from 31 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 9:
20 can be fit into 110 5 times, resulting in a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 1541801.5
If we take 100 away from 110, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
100 divided by 20 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 1541801.55
Deduct 100 from 100 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.

After the division, we end up with 1541801.55 and a remainder of 0.0.