86159286 ÷ 355 
Our goal is to divide 86159286 by 355.

Going ahead to step 1:
The number 355 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 355

Let's proceed to step 2:
If we divide 86 by 355, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Grab the next digit (1) from the dividend, add it to 86, then carry on: 861 / 355

Going ahead to step 3:
The number 355 fits into 861 2 times, leaving a remainder of 151.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 710 from 861, we get 151.
Grab the next digit (5) from the dividend, add it to 151, then carry on: 1515 / 355

On to step 4:
When dividing 1515 by 355, we get 4 with a remainder of 95.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Deduct 1420 from 1515 and we're left with 95.
Fetch the next digit (9) from the dividend, attach it to 95 and continue: 959 / 355

Let's proceed to step 5:
If we divide 959 by 355, we get 2 and a remainder of 249.
The next digit of our result is 2. 
Result so far: 242.0
If we subtract 710 from 959, we get 249.
Grab the next digit (2) from the dividend, add it to 249, then carry on: 2492 / 355

Let's proceed to step 6:
2492 divided by 355 is 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 2427.0
Deduct 2485 from 2492 and we're left with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 355

Moving on to step 7:
If we divide 78 by 355, we get 0 and a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 24270.0
Deduct 0 from 78 and we're left with 78.
Bring next digit (6) of the dividend behind the 78 and repeat the process: 786 / 355

On to step 8:
355 goes into 786 2 times with a remainder of 76.
Record the quotient 2 as the next digit in the result. 
Result so far: 242702.0
Subtract 710 from 786 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 9:
760 divided by 355 is 2 with a remainder of 50.
Write down 2 as next digit of the result. 
Result so far: 242702.2
The remainder is 50 after subtracting 710 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 10:
The number 355 fits into 500 1 times, leaving a remainder of 145.
Record the quotient 1 as the next digit in the result. 
Result so far: 242702.21
Subtracting 355 from 500 leaves us with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Going ahead to step 11:
If we divide 1450 by 355, we get 4 and a remainder of 30.
The next digit of our result is 4. 
Result so far: 242702.214
The remainder is 30 after subtracting 1420 from 1450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
The number 355 fits into 300 0 times, leaving a remainder of 300.
Write down 0 as next digit of the result. 
Result so far: 242702.214
Deduct 0 from 300 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Let's proceed to step 13:
If we divide 3000 by 355, we get 8 and a remainder of 160.
Use 8 as the next digit of our solution. 
Result so far: 242702.21408
If we take 2840 away from 3000, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 14:
1600 divided by 355 is 4 with a remainder of 180.
The number 4 becomes the next digit in our result. 
Result so far: 242702.214084
Subtract 1420 from 1600 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 15:
When dividing 1800 by 355, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 242702.2140845
Subtracting 1775 from 1800 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 16:
If we divide 250 by 355, we get 0 and a remainder of 250.
Write down 0 as next digit of the result. 
Result so far: 242702.2140845
Subtract 0 from 250 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

The final result is 242702.2140845 with a remainder of 2.5e-07.