Let's divide 736971 by 20
The aim is to understand the frequency of 20 in 736971.

Advancing to step 1:
7 divided by 20 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 20

Going ahead to step 2:
20 goes into 73 3 times with a remainder of 13.
The next digit of our result is 3. 
Result so far: 3.0
If we take 60 away from 73, we end up with 13.
Append the next digit (6) from the dividend to 13 and continue with: 136 / 20

Moving on to step 3:
20 can be fit into 136 6 times, resulting in a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 36.0
The remainder is 16 after subtracting 120 from 136.
Fetch the next digit (9) from the dividend, attach it to 16 and continue: 169 / 20

Step 4:
If we divide 169 by 20, we get 8 and a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 368.0
Deduct 160 from 169 and we're left with 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 20

Going ahead to step 5:
97 divided by 20 is 4 with a remainder of 17.
The next digit of our result is 4. 
Result so far: 3684.0
If we subtract 80 from 97, we get 17.
Fetch the next digit (1) from the dividend, attach it to 17 and continue: 171 / 20

Advancing to step 6:
20 goes into 171 8 times with a remainder of 11.
The next digit of our result is 8. 
Result so far: 36848.0
The remainder is 11 after subtracting 160 from 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 7:
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: 36848.5
Deduct 100 from 110 and we're left 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.

Advancing to step 8:
20 goes into 100 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 36848.55
If we take 100 away from 100, 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.

Our division results in 36848.55 with a remaining 0.0.