Let's divide 543791 by 20
We want to figure out the number of times 543791 can be divided by 20.

Step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 20

On to step 2:
54 divided by 20 is 2 with a remainder of 14.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 40 from 54 to get 14.
Bring next digit (3) of the dividend behind the 14 and repeat the process: 143 / 20

Moving on to step 3:
If we divide 143 by 20, we get 7 and a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
Subtract 140 from 143 to get 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 20

Going ahead to step 4:
37 divided by 20 is 1 with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 271.0
Subtracting 20 from 37 leaves us with 17.
Bring next digit (9) of the dividend behind the 17 and repeat the process: 179 / 20

Step 5:
20 goes into 179 8 times with a remainder of 19.
Use 8 as the next digit of our solution. 
Result so far: 2718.0
If we take 160 away from 179, we end up with 19.
Bring next digit (1) of the dividend behind the 19 and repeat the process: 191 / 20

Going ahead to step 6:
191 divided by 20 is 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 27189.0
If we take 180 away from 191, we end up 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.

Advancing to step 7:
If we divide 110 by 20, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 27189.5
Subtracting 100 from 110 leaves us 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.

Let's proceed to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 27189.55
If we subtract 100 from 100, 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.

The quotient of the division is 27189.55, and the remainder is 0.0.