We divide 310393 by 86
We want to divide 310393 by 86.

Let's proceed to step 1:
86 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 86

Step 2:
86 goes into 31 0 times with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Take the next digit (0) from the dividend and append it to 31, then repeat: 310 / 86

Let's proceed to step 3:
86 can be fit into 310 3 times, resulting in a remainder of 52.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 52 after subtracting 258 from 310.
Append the next digit (3) from the dividend to 52 and continue with: 523 / 86

Let's proceed to step 4:
The number 86 fits into 523 6 times, leaving a remainder of 7.
Put 6 as the next digit of the answer. 
Result so far: 36.0
The remainder is 7 after subtracting 516 from 523.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 86

Going ahead to step 5:
When dividing 79 by 86, we get 0 with a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 360.0
Subtracting 0 from 79 leaves us with 79.
Append the next digit (3) from the dividend to 79 and continue with: 793 / 86

Let's proceed to step 6:
86 can be fit into 793 9 times, resulting in a remainder of 19.
The next digit of our result is 9. 
Result so far: 3609.0
The remainder is 19 after subtracting 774 from 793.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 7:
When dividing 190 by 86, we get 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 3609.2
If we take 172 away from 190, 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.

Going ahead to step 8:
86 can be fit into 180 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 3609.22
The remainder is 8 after subtracting 172 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 3609.22 and a remainder of 0.008.