We're dividing 873521 by 20 
Let's see how many times 20 fits into 873521.

Going ahead 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.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 20

Advancing to step 2:
20 can be fit into 87 4 times, resulting in a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 80 from 87 to get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 20

On to step 3:
20 goes into 73 3 times with a remainder of 13.
The next digit of our result is 3. 
Result so far: 43.0
Deduct 60 from 73 and we're left with 13.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 20

On to step 4:
135 divided by 20 is 6 with a remainder of 15.
The next digit of our result is 6. 
Result so far: 436.0
If we subtract 120 from 135, we get 15.
Bring next digit (2) of the dividend behind the 15 and repeat the process: 152 / 20

Going ahead to step 5:
If we divide 152 by 20, we get 7 and a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 4367.0
If we subtract 140 from 152, we get 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 20

Going ahead to step 6:
121 divided by 20 is 6 with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 43676.0
Subtracting 120 from 121 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
20 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 43676.0
The remainder is 10 after subtracting 0 from 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:
When dividing 100 by 20, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 43676.05
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:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 43676.05
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.

On to step 10:
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: 43676.05
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.

The quotient of the division is 43676.05, and the remainder is 0.0.