We look at the division of 20457 by 30 
Let's see how many times 30 fits into 20457.

Moving on to step 1:
If we divide 2 by 30, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 30

Going ahead to step 2:
20 divided by 30 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Fetch the next digit (4) from the dividend, attach it to 20 and continue: 204 / 30

Moving on to step 3:
The number 30 fits into 204 6 times, leaving a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 180 from 204, we get 24.
Take the next digit (5) from the dividend and append it to 24, then repeat: 245 / 30

Let's proceed to step 4:
245 divided by 30 is 8 with a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 68.0
If we subtract 240 from 245, we get 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 30

Let's proceed to step 5:
30 can be fit into 57 1 times, resulting in a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 681.0
Deduct 30 from 57 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 6:
30 goes into 270 9 times with a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 681.9
Deduct 270 from 270 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.

Let's proceed to step 7:
0 divided by 30 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 681.9
If we take 0 away from 0, we end up 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.

Advancing to step 8:
When dividing 0 by 30, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 681.9
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 final result is 681.9 with a remainder of 0.0.