We're dividing 307891 by 3 
We're looking to find how many times 3 goes into 307891.

Step 1:
The number 3 fits into 3 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 3 from 3, we get 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 3

Step 2:
When dividing 0 by 3, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 0 leaves us with 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 3

Moving on to step 3:
7 divided by 3 is 2 with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 102.0
If we take 6 away from 7, we end up with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 3

Going ahead to step 4:
If we divide 18 by 3, we get 6 and a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 1026.0
If we take 18 away from 18, we end up with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 3

Let's proceed to step 5:
3 goes into 9 3 times with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 10263.0
The remainder is 0 after subtracting 9 from 9.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 3

Going ahead to step 6:
The number 3 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 102630.0
Deduct 0 from 1 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
The number 3 fits into 10 3 times, leaving a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 102630.3
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 8:
When dividing 10 by 3, we get 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 102630.33
If we take 9 away from 10, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 102630.33 with a balance of 0.001.