864 divided by 68 
Let's see how many times 68 fits into 864.

Going ahead to step 1:
When dividing 8 by 68, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 68

Step 2:
86 divided by 68 is 1 with a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 68 from 86 to get 18.
Grab the next digit (4) from the dividend, add it to 18, then carry on: 184 / 68

Step 3:
68 can be fit into 184 2 times, resulting in a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 136 from 184 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 4:
68 can be fit into 480 7 times, resulting in a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 12.7
Subtract 476 from 480 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 5:
68 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 12.7
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 6:
68 can be fit into 400 5 times, resulting in a remainder of 60.
The next digit of our result is 5. 
Result so far: 12.705
If we subtract 340 from 400, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 7:
68 goes into 600 8 times with a remainder of 56.
Put 8 as the next digit of the answer. 
Result so far: 12.7058
Subtracting 544 from 600 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 8:
The number 68 fits into 560 8 times, leaving a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 12.70588
Subtracting 544 from 560 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 12.70588 with a remaining 1.6e-05.