We're dividing 15400376 by 30 
Let's see how many times 30 fits into 15400376.

Moving on to step 1:
1 divided by 30 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 30

Step 2:
15 divided by 30 is 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 30

On to step 3:
If we divide 154 by 30, we get 5 and a remainder of 4.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 150 from 154 to get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 30

Moving on to step 4:
If we divide 40 by 30, we get 1 and a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 51.0
Deduct 30 from 40 and we're left with 10.
Append the next digit (0) from the dividend to 10 and continue with: 100 / 30

On to step 5:
30 can be fit into 100 3 times, resulting in a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 513.0
Subtracting 90 from 100 leaves us with 10.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 30

Going ahead to step 6:
30 can be fit into 103 3 times, resulting in a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 5133.0
Subtract 90 from 103 to get 13.
Append the next digit (7) from the dividend to 13 and continue with: 137 / 30

Let's proceed to step 7:
When dividing 137 by 30, we get 4 with a remainder of 17.
The next digit of our result is 4. 
Result so far: 51334.0
If we subtract 120 from 137, we get 17.
Grab the next digit (6) from the dividend, add it to 17, then carry on: 176 / 30

On to step 8:
30 can be fit into 176 5 times, resulting in a remainder of 26.
Use 5 as the next digit of our solution. 
Result so far: 513345.0
If we subtract 150 from 176, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
If we divide 260 by 30, we get 8 and a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 513345.8
Subtract 240 from 260 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
If we divide 200 by 30, we get 6 and a remainder of 20.
The next digit of our result is 6. 
Result so far: 513345.86
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
200 divided by 30 is 6 with a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 513345.866
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 513345.866, with a leftover of 0.002.