67891 ÷ 78 
Our goal is to divide 67891 by 78.

Advancing to step 1:
78 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 78

On to step 2:
78 can be fit into 67 0 times, resulting in a remainder of 67.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 67 leaves us with 67.
Append the next digit (8) from the dividend to 67 and continue with: 678 / 78

Let's proceed to step 3:
678 divided by 78 is 8 with a remainder of 54.
The next digit of our result is 8. 
Result so far: 8.0
If we take 624 away from 678, we end up with 54.
Include the next digit (9) from the dividend after 54, then repeat: 549 / 78

Step 4:
78 can be fit into 549 7 times, resulting in a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 87.0
If we subtract 546 from 549, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 78

Moving on to step 5:
78 can be fit into 31 0 times, resulting in a remainder of 31.
Use 0 as the next digit of our solution. 
Result so far: 870.0
Subtract 0 from 31 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 6:
The number 78 fits into 310 3 times, leaving a remainder of 76.
The number 3 becomes the next digit in our result. 
Result so far: 870.3
Subtracting 234 from 310 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 7:
760 divided by 78 is 9 with a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 870.39
Subtract 702 from 760 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 8:
78 goes into 580 7 times with a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 870.397
If we take 546 away from 580, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 9:
The number 78 fits into 340 4 times, leaving a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 870.3974
Deduct 312 from 340 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 10:
78 can be fit into 280 3 times, resulting in a remainder of 46.
Put 3 as the next digit of the answer. 
Result so far: 870.39743
Subtract 234 from 280 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 11:
The number 78 fits into 460 5 times, leaving a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 870.397435
Subtract 390 from 460 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 12:
When dividing 700 by 78, we get 8 with a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 870.3974358
If we take 624 away from 700, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 13:
If we divide 760 by 78, we get 9 and a remainder of 58.
Use 9 as the next digit of our solution. 
Result so far: 870.39743589
Subtract 702 from 760 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 870.39743589 with a remainder of 5.8e-08.