We look at the division of 7830 by 57 
Let's see how many times 57 fits into 7830.

Going ahead to step 1:
7 divided by 57 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 57

Moving on to step 2:
78 divided by 57 is 1 with a remainder of 21.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 57 from 78 leaves us with 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 57

Step 3:
57 can be fit into 213 3 times, resulting in a remainder of 42.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 171 from 213, we get 42.
Fetch the next digit (0) from the dividend, attach it to 42 and continue: 420 / 57

Moving on to step 4:
The number 57 fits into 420 7 times, leaving a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 137.0
Subtract 399 from 420 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.

Step 5:
When dividing 210 by 57, we get 3 with a remainder of 39.
The next digit of our result is 3. 
Result so far: 137.3
Subtract 171 from 210 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 6:
57 goes into 390 6 times with a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 137.36
Deduct 342 from 390 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 7:
If we divide 480 by 57, we get 8 and a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 137.368
If we subtract 456 from 480, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 8:
240 divided by 57 is 4 with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 137.3684
The remainder is 12 after subtracting 228 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
If we divide 120 by 57, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 137.36842
If we subtract 114 from 120, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 10:
The number 57 fits into 60 1 times, leaving a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 137.368421
Subtracting 57 from 60 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 11:
57 goes into 30 0 times with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 137.368421
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 12:
If we divide 300 by 57, we get 5 and a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 137.36842105
Deduct 285 from 300 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 137.36842105 with a remainder of 1.5e-08.