We're dividing 871730 by 20 
Our goal is to divide 871730 by 20.

Step 1:
20 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 20

Going ahead to step 2:
When dividing 87 by 20, we get 4 with a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 80 from 87, we get 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 20

Advancing to step 3:
If we divide 71 by 20, we get 3 and a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 43.0
Subtract 60 from 71 to get 11.
Take the next digit (7) from the dividend and append it to 11, then repeat: 117 / 20

Advancing to step 4:
117 divided by 20 is 5 with a remainder of 17.
The next digit of our result is 5. 
Result so far: 435.0
The remainder is 17 after subtracting 100 from 117.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 20

Advancing to step 5:
173 divided by 20 is 8 with a remainder of 13.
The next digit of our result is 8. 
Result so far: 4358.0
Deduct 160 from 173 and we're left with 13.
Take the next digit (0) from the dividend and append it to 13, then repeat: 130 / 20

Moving on to step 6:
20 goes into 130 6 times with a remainder of 10.
The next digit of our result is 6. 
Result so far: 43586.0
Deduct 120 from 130 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 7:
20 goes into 100 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 43586.5
Subtracting 100 from 100 leaves us 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 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 43586.5
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.

Moving on to step 9:
20 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 43586.5
Subtract 0 from 0 to 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 final result is 43586.5 with a remainder of 0.0.