We divide 86646863 by 313
We want to figure out the number of times 86646863 can be divided by 313.

On to step 1:
313 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 313

Step 2:
The number 313 fits into 86 0 times, leaving a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Fetch the next digit (6) from the dividend, attach it to 86 and continue: 866 / 313

Moving on to step 3:
313 can be fit into 866 2 times, resulting in a remainder of 240.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 626 from 866 to get 240.
Include the next digit (4) from the dividend after 240, then repeat: 2404 / 313

Advancing to step 4:
2404 divided by 313 is 7 with a remainder of 213.
Put 7 as the next digit of the answer. 
Result so far: 27.0
If we take 2191 away from 2404, we end up with 213.
Append the next digit (6) from the dividend to 213 and continue with: 2136 / 313

Step 5:
313 can be fit into 2136 6 times, resulting in a remainder of 258.
Use 6 as the next digit of our solution. 
Result so far: 276.0
If we subtract 1878 from 2136, we get 258.
Append the next digit (8) from the dividend to 258 and continue with: 2588 / 313

Moving on to step 6:
2588 divided by 313 is 8 with a remainder of 84.
Record the quotient 8 as the next digit in the result. 
Result so far: 2768.0
If we subtract 2504 from 2588, we get 84.
Include the next digit (6) from the dividend after 84, then repeat: 846 / 313

Step 7:
If we divide 846 by 313, we get 2 and a remainder of 220.
Record the quotient 2 as the next digit in the result. 
Result so far: 27682.0
If we take 626 away from 846, we end up with 220.
Take the next digit (3) from the dividend and append it to 220, then repeat: 2203 / 313

Let's proceed to step 8:
313 goes into 2203 7 times with a remainder of 12.
The next digit of our result is 7. 
Result so far: 276827.0
Deduct 2191 from 2203 and we're left 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.

Step 9:
The number 313 fits into 120 0 times, leaving a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 276827.0
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 10:
313 can be fit into 1200 3 times, resulting in a remainder of 261.
Use 3 as the next digit of our solution. 
Result so far: 276827.03
Deduct 939 from 1200 and we're left with 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

Step 11:
When dividing 2610 by 313, we get 8 with a remainder of 106.
The next digit of our result is 8. 
Result so far: 276827.038
The remainder is 106 after subtracting 2504 from 2610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Step 12:
When dividing 1060 by 313, we get 3 with a remainder of 121.
The next digit of our result is 3. 
Result so far: 276827.0383
If we take 939 away from 1060, we end up with 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Let's proceed to step 13:
When dividing 1210 by 313, we get 3 with a remainder of 271.
Use 3 as the next digit of our solution. 
Result so far: 276827.03833
The remainder is 271 after subtracting 939 from 1210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

After the division, we end up with 276827.03833 and a remainder of 0.000271.