We're dividing 51723 by 42 
Our goal is to divide 51723 by 42.

Let's proceed to step 1:
5 divided by 42 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 42

Going ahead to step 2:
42 can be fit into 51 1 times, resulting in a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 42 from 51, we get 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 42

Let's proceed to step 3:
When dividing 97 by 42, we get 2 with a remainder of 13.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we subtract 84 from 97, we get 13.
Fetch the next digit (2) from the dividend, attach it to 13 and continue: 132 / 42

Going ahead to step 4:
132 divided by 42 is 3 with a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 123.0
If we take 126 away from 132, we end up with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 42

Moving on to step 5:
63 divided by 42 is 1 with a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 1231.0
Subtract 42 from 63 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 6:
42 goes into 210 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 1231.5
The remainder is 0 after subtracting 210 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
0 divided by 42 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1231.5
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.

Let's proceed to step 8:
0 divided by 42 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1231.5
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 quotient of the division is 1231.5, and the remainder is 0.0.