We divide 863173 by 20
Our goal is to divide 863173 by 20.

Step 1:
20 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 20

Step 2:
20 goes into 86 4 times with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 80 from 86 to get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 20

On to step 3:
20 can be fit into 63 3 times, resulting in a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 43.0
If we subtract 60 from 63, we get 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 20

Advancing to step 4:
If we divide 31 by 20, we get 1 and a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 431.0
Subtracting 20 from 31 leaves us with 11.
Grab the next digit (7) from the dividend, add it to 11, then carry on: 117 / 20

Going ahead to step 5:
When dividing 117 by 20, we get 5 with a remainder of 17.
The number 5 becomes the next digit in our result. 
Result so far: 4315.0
Subtract 100 from 117 to get 17.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 20

Let's proceed to step 6:
If we divide 173 by 20, we get 8 and a remainder of 13.
The number 8 becomes the next digit in our result. 
Result so far: 43158.0
Deduct 160 from 173 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 7:
If we divide 130 by 20, we get 6 and a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 43158.6
Subtracting 120 from 130 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.

Going ahead 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: 43158.65
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.

On to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 43158.65
If we subtract 0 from 0, 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.

Going ahead to step 10:
20 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 43158.65
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.

The quotient of the division is 43158.65, and the remainder is 0.0.