We look at the division of 306105 by 15 
We want to divide 306105 by 15.

Moving on to step 1:
15 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 15

Advancing to step 2:
30 divided by 15 is 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 30 from 30, we get 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 15

Advancing to step 3:
15 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 20.0
If we take 0 away from 6, we end up with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 15

On to step 4:
When dividing 61 by 15, we get 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 204.0
Deduct 60 from 61 and we're left with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 15

Let's proceed to step 5:
15 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 2040.0
The remainder is 10 after subtracting 0 from 10.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 15

Going ahead to step 6:
If we divide 105 by 15, we get 7 and a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 20407.0
If we subtract 105 from 105, 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.

Let's proceed to step 7:
15 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 20407.0
If we take 0 away from 0, we end up 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:
15 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 20407.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 20407.0, and the remainder is 0.0.