We're dividing 57138 by 91 
We want to figure out the number of times 57138 can be divided by 91.

Moving on to step 1:
91 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 91

Advancing to step 2:
The number 91 fits into 57 0 times, leaving a remainder of 57.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Include the next digit (1) from the dividend after 57, then repeat: 571 / 91

Moving on to step 3:
The number 91 fits into 571 6 times, leaving a remainder of 25.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 25 after subtracting 546 from 571.
Fetch the next digit (3) from the dividend, attach it to 25 and continue: 253 / 91

Going ahead to step 4:
If we divide 253 by 91, we get 2 and a remainder of 71.
Use 2 as the next digit of our solution. 
Result so far: 62.0
If we subtract 182 from 253, we get 71.
Fetch the next digit (8) from the dividend, attach it to 71 and continue: 718 / 91

On to step 5:
If we divide 718 by 91, we get 7 and a remainder of 81.
Record the quotient 7 as the next digit in the result. 
Result so far: 627.0
Subtracting 637 from 718 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Going ahead to step 6:
91 can be fit into 810 8 times, resulting in a remainder of 82.
Put 8 as the next digit of the answer. 
Result so far: 627.8
If we take 728 away from 810, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 7:
When dividing 820 by 91, we get 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 627.89
The remainder is 1 after subtracting 819 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
91 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 627.89
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
The number 91 fits into 100 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 627.8901
Subtracting 91 from 100 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 10:
91 can be fit into 90 0 times, resulting in a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 627.8901
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 11:
If we divide 900 by 91, we get 9 and a remainder of 81.
Put 9 as the next digit of the answer. 
Result so far: 627.890109
Subtracting 819 from 900 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 12:
810 divided by 91 is 8 with a remainder of 82.
Put 8 as the next digit of the answer. 
Result so far: 627.8901098
Subtract 728 from 810 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 13:
820 divided by 91 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 627.89010989
Deduct 819 from 820 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Our division results in 627.89010989 with a remaining 1e-09.