135397 ÷ 86 
We want to divide 135397 by 86.

On to step 1:
1 divided by 86 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 86

Advancing to step 2:
86 can be fit into 13 0 times, resulting in a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Fetch the next digit (5) from the dividend, attach it to 13 and continue: 135 / 86

On to step 3:
135 divided by 86 is 1 with a remainder of 49.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 86 from 135 leaves us with 49.
Grab the next digit (3) from the dividend, add it to 49, then carry on: 493 / 86

Step 4:
493 divided by 86 is 5 with a remainder of 63.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 430 away from 493, we end up with 63.
Grab the next digit (9) from the dividend, add it to 63, then carry on: 639 / 86

Step 5:
639 divided by 86 is 7 with a remainder of 37.
Use 7 as the next digit of our solution. 
Result so far: 157.0
If we subtract 602 from 639, we get 37.
Bring next digit (7) of the dividend behind the 37 and repeat the process: 377 / 86

Step 6:
When dividing 377 by 86, we get 4 with a remainder of 33.
Write down 4 as next digit of the result. 
Result so far: 1574.0
If we take 344 away from 377, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 7:
86 goes into 330 3 times with a remainder of 72.
Record the quotient 3 as the next digit in the result. 
Result so far: 1574.3
Deduct 258 from 330 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 8:
86 can be fit into 720 8 times, resulting in a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 1574.38
If we take 688 away from 720, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 9:
If we divide 320 by 86, we get 3 and a remainder of 62.
The next digit of our result is 3. 
Result so far: 1574.383
The remainder is 62 after subtracting 258 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 10:
86 can be fit into 620 7 times, resulting in a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 1574.3837
If we take 602 away from 620, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 11:
180 divided by 86 is 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 1574.38372
Subtract 172 from 180 to get 8.
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 12:
80 divided by 86 is 0 with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 1574.38372
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 13:
The number 86 fits into 800 9 times, leaving a remainder of 26.
Put 9 as the next digit of the answer. 
Result so far: 1574.3837209
Deduct 774 from 800 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 14:
When dividing 260 by 86, we get 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 1574.38372093
If we take 258 away from 260, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The quotient of the division is 1574.38372093, and the remainder is 2e-09.