We look at the division of 84437 by 20 
The aim is to understand the frequency of 20 in 84437.

Advancing to step 1:
When dividing 8 by 20, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 20

Let's proceed to step 2:
20 can be fit into 84 4 times, resulting in a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 80 from 84 and we're left with 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 20

On to step 3:
20 can be fit into 44 2 times, resulting in a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
Subtract 40 from 44 to get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 20

Advancing to step 4:
20 can be fit into 43 2 times, resulting in a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 422.0
The remainder is 3 after subtracting 40 from 43.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 20

Advancing to step 5:
37 divided by 20 is 1 with a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 4221.0
Deduct 20 from 37 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 6:
20 can be fit into 170 8 times, resulting in a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 4221.8
Deduct 160 from 170 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.

Going ahead to step 7:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 4221.85
The remainder is 0 after subtracting 100 from 100.
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 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 4221.85
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.

On to step 9:
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: 4221.85
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.

In conclusion, the division gives 4221.85 with a balance of 0.0.