Let's divide 135993 by 57
We want to figure out the number of times 135993 can be divided by 57.

Step 1:
1 divided by 57 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 57

Step 2:
57 can be fit into 13 0 times, resulting in a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Include the next digit (5) from the dividend after 13, then repeat: 135 / 57

Moving on to step 3:
135 divided by 57 is 2 with a remainder of 21.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 114 from 135 to get 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 57

Step 4:
The number 57 fits into 219 3 times, leaving a remainder of 48.
Use 3 as the next digit of our solution. 
Result so far: 23.0
Deduct 171 from 219 and we're left with 48.
Take the next digit (9) from the dividend and append it to 48, then repeat: 489 / 57

Advancing to step 5:
The number 57 fits into 489 8 times, leaving a remainder of 33.
The number 8 becomes the next digit in our result. 
Result so far: 238.0
Subtracting 456 from 489 leaves us with 33.
Take the next digit (3) from the dividend and append it to 33, then repeat: 333 / 57

On to step 6:
The number 57 fits into 333 5 times, leaving a remainder of 48.
Put 5 as the next digit of the answer. 
Result so far: 2385.0
Subtract 285 from 333 to get 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.
The number 8 becomes the next digit in our result. 
Result so far: 2385.8
Deduct 456 from 480 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
When dividing 240 by 57, we get 4 with a remainder of 12.
The next digit of our result is 4. 
Result so far: 2385.84
If we take 228 away from 240, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
When dividing 120 by 57, we get 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 2385.842
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.

Moving on to step 10:
57 goes into 60 1 times with a remainder of 3.
The next digit of our result is 1. 
Result so far: 2385.8421
If we take 57 away from 60, we end up 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.

Advancing 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: 2385.8421
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 12:
When dividing 300 by 57, we get 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 2385.842105
Subtract 285 from 300 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 13:
57 goes into 150 2 times with a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 2385.8421052
If we take 114 away from 150, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 14:
57 can be fit into 360 6 times, resulting in a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 2385.84210526
Subtract 342 from 360 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 2385.84210526 with a remaining 1.8e-08.