30509151 ÷ 15 
Our goal is to divide 30509151 by 15.

On to step 1:
If we divide 3 by 15, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 15

Step 2:
When dividing 30 by 15, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 30 away from 30, we end up with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 15

On to step 3:
15 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 15

Going ahead to step 4:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 203.0
If we take 45 away from 50, we end up with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 15

On to step 5:
If we divide 59 by 15, we get 3 and a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 2033.0
Subtracting 45 from 59 leaves us with 14.
Fetch the next digit (1) from the dividend, attach it to 14 and continue: 141 / 15

Going ahead to step 6:
141 divided by 15 is 9 with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 20339.0
Deduct 135 from 141 and we're left with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 15

Let's proceed to step 7:
When dividing 65 by 15, we get 4 with a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 203394.0
Deduct 60 from 65 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 15

Step 8:
When dividing 51 by 15, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 2033943.0
If we subtract 45 from 51, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
The number 15 fits into 60 4 times, leaving a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 2033943.4
If we take 60 away from 60, 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.

Step 10:
15 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2033943.4
Subtract 0 from 0 to 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.

Moving on to step 11:
If we divide 0 by 15, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2033943.4
Subtract 0 from 0 to 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.

The quotient of the division is 2033943.4, and the remainder is 0.0.