We look at the division of 857830 by 30 
Let's see how many times 30 fits into 857830.

Step 1:
30 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 30

Moving on to step 2:
The number 30 fits into 85 2 times, leaving a remainder of 25.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 25 after subtracting 60 from 85.
Append the next digit (7) from the dividend to 25 and continue with: 257 / 30

Advancing to step 3:
If we divide 257 by 30, we get 8 and a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 28.0
If we subtract 240 from 257, we get 17.
Grab the next digit (8) from the dividend, add it to 17, then carry on: 178 / 30

Advancing to step 4:
When dividing 178 by 30, we get 5 with a remainder of 28.
The next digit of our result is 5. 
Result so far: 285.0
If we subtract 150 from 178, we get 28.
Fetch the next digit (3) from the dividend, attach it to 28 and continue: 283 / 30

Moving on to step 5:
30 goes into 283 9 times with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 2859.0
If we subtract 270 from 283, we get 13.
Bring next digit (0) of the dividend behind the 13 and repeat the process: 130 / 30

Moving on to step 6:
30 can be fit into 130 4 times, resulting in a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 28594.0
Subtracting 120 from 130 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:
30 goes into 100 3 times with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 28594.3
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
The number 30 fits into 100 3 times, leaving a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 28594.33
Subtracting 90 from 100 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.

The final result is 28594.33 with a remainder of 0.01.