We divide 871430 by 20
We're looking to find how many times 20 goes into 871430.

Moving on to step 1:
20 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 20

Moving on to step 2:
20 can be fit into 87 4 times, resulting in a remainder of 7.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 80 from 87 and we're left with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 20

On to step 3:
20 can be fit into 71 3 times, resulting in a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Deduct 60 from 71 and we're left with 11.
Bring next digit (4) of the dividend behind the 11 and repeat the process: 114 / 20

On to step 4:
114 divided by 20 is 5 with a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 435.0
Subtract 100 from 114 to get 14.
Take the next digit (3) from the dividend and append it to 14, then repeat: 143 / 20

Step 5:
The number 20 fits into 143 7 times, leaving a remainder of 3.
The next digit of our result is 7. 
Result so far: 4357.0
If we take 140 away from 143, we end up with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 20

Step 6:
20 goes into 30 1 times with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 43571.0
Subtracting 20 from 30 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 7:
If we divide 100 by 20, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 43571.5
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.

Moving on to step 8:
20 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 43571.5
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.

Moving on to step 9:
20 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 43571.5
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 final result is 43571.5 with a remainder of 0.0.