We're dividing 306840 by 10 
Our goal is to divide 306840 by 10.

On to step 1:
The number 10 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 10

Going ahead to step 2:
10 goes into 30 3 times with a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 30 from 30 to get 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 10

Going ahead to step 3:
10 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 30.0
Subtract 0 from 6 to get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 10

Going ahead to step 4:
68 divided by 10 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 306.0
Deduct 60 from 68 and we're left with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 10

Advancing to step 5:
When dividing 84 by 10, we get 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 3068.0
Deduct 80 from 84 and we're left with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 10

On to step 6:
If we divide 40 by 10, we get 4 and a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 30684.0
Deduct 40 from 40 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
The number 10 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 30684.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
10 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 30684.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 30684.0 and a remainder of 0.0.