86912309 divided by 356 
We're looking to find how many times 356 goes into 86912309.

On to step 1:
If we divide 8 by 356, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 356

Moving on to step 2:
If we divide 86 by 356, we get 0 and a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Take the next digit (9) from the dividend and append it to 86, then repeat: 869 / 356

Advancing to step 3:
356 can be fit into 869 2 times, resulting in a remainder of 157.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 712 away from 869, we end up with 157.
Bring next digit (1) of the dividend behind the 157 and repeat the process: 1571 / 356

Let's proceed to step 4:
If we divide 1571 by 356, we get 4 and a remainder of 147.
Put 4 as the next digit of the answer. 
Result so far: 24.0
The remainder is 147 after subtracting 1424 from 1571.
Take the next digit (2) from the dividend and append it to 147, then repeat: 1472 / 356

Advancing to step 5:
If we divide 1472 by 356, we get 4 and a remainder of 48.
The next digit of our result is 4. 
Result so far: 244.0
Subtract 1424 from 1472 to get 48.
Fetch the next digit (3) from the dividend, attach it to 48 and continue: 483 / 356

Going ahead to step 6:
When dividing 483 by 356, we get 1 with a remainder of 127.
Put 1 as the next digit of the answer. 
Result so far: 2441.0
Subtracting 356 from 483 leaves us with 127.
Include the next digit (0) from the dividend after 127, then repeat: 1270 / 356

Advancing to step 7:
When dividing 1270 by 356, we get 3 with a remainder of 202.
Use 3 as the next digit of our solution. 
Result so far: 24413.0
Subtract 1068 from 1270 to get 202.
Take the next digit (9) from the dividend and append it to 202, then repeat: 2029 / 356

Step 8:
356 can be fit into 2029 5 times, resulting in a remainder of 249.
Put 5 as the next digit of the answer. 
Result so far: 244135.0
The remainder is 249 after subtracting 1780 from 2029.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

On to step 9:
If we divide 2490 by 356, we get 6 and a remainder of 354.
The number 6 becomes the next digit in our result. 
Result so far: 244135.6
If we subtract 2136 from 2490, we get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Going ahead to step 10:
When dividing 3540 by 356, we get 9 with a remainder of 336.
Put 9 as the next digit of the answer. 
Result so far: 244135.69
Subtract 3204 from 3540 to get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Advancing to step 11:
356 goes into 3360 9 times with a remainder of 156.
Put 9 as the next digit of the answer. 
Result so far: 244135.699
Deduct 3204 from 3360 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

In conclusion, the division gives 244135.699 with a balance of 0.0156.