We divide 842729 by 20
Let's see how many times 20 fits into 842729.

Going ahead to step 1:
20 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 20

On to step 2:
The number 20 fits into 84 4 times, leaving a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 80 from 84 and we're left with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 20

Step 3:
20 can be fit into 42 2 times, resulting in a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we subtract 40 from 42, we get 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 20

Step 4:
The number 20 fits into 27 1 times, leaving a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 421.0
If we take 20 away from 27, we end up with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 20

Step 5:
The number 20 fits into 72 3 times, leaving a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 4213.0
The remainder is 12 after subtracting 60 from 72.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 20

Advancing to step 6:
When dividing 129 by 20, we get 6 with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 42136.0
Subtracting 120 from 129 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 7:
20 can be fit into 90 4 times, resulting in a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 42136.4
Subtracting 80 from 90 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.

Moving on to step 8:
20 goes into 100 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 42136.45
Deduct 100 from 100 and we're left 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 9:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 42136.45
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.

Moving on to step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 42136.45
Deduct 0 from 0 and we're left 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.

The quotient of the division is 42136.45, and the remainder is 0.0.