135520 ÷ 68 
We want to figure out the number of times 135520 can be divided by 68.

Advancing to step 1:
1 divided by 68 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 68

Advancing to step 2:
68 can be fit into 13 0 times, resulting in a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Fetch the next digit (5) from the dividend, attach it to 13 and continue: 135 / 68

Moving on to step 3:
The number 68 fits into 135 1 times, leaving a remainder of 67.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 67 after subtracting 68 from 135.
Take the next digit (5) from the dividend and append it to 67, then repeat: 675 / 68

Step 4:
When dividing 675 by 68, we get 9 with a remainder of 63.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Deduct 612 from 675 and we're left with 63.
Grab the next digit (2) from the dividend, add it to 63, then carry on: 632 / 68

Step 5:
If we divide 632 by 68, we get 9 and a remainder of 20.
The next digit of our result is 9. 
Result so far: 199.0
Subtracting 612 from 632 leaves us with 20.
Take the next digit (0) from the dividend and append it to 20, then repeat: 200 / 68

Let's proceed to step 6:
If we divide 200 by 68, we get 2 and a remainder of 64.
The next digit of our result is 2. 
Result so far: 1992.0
Subtracting 136 from 200 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 7:
68 goes into 640 9 times with a remainder of 28.
Write down 9 as next digit of the result. 
Result so far: 1992.9
If we take 612 away from 640, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 8:
When dividing 280 by 68, we get 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 1992.94
The remainder is 8 after subtracting 272 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
The number 68 fits into 80 1 times, leaving a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1992.941
The remainder is 12 after subtracting 68 from 80.
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 10:
68 can be fit into 120 1 times, resulting in a remainder of 52.
Put 1 as the next digit of the answer. 
Result so far: 1992.9411
If we take 68 away from 120, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Our division results in 1992.9411 with a remaining 0.00052.