We look at the division of 13780964 by 15 
We want to divide 13780964 by 15.

On to step 1:
15 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 15

Going ahead to step 2:
When dividing 13 by 15, we get 0 with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 15

Advancing to step 3:
15 goes into 137 9 times with a remainder of 2.
The next digit of our result is 9. 
Result so far: 9.0
Deduct 135 from 137 and we're left with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 15

Moving on to step 4:
If we divide 28 by 15, we get 1 and a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 91.0
If we subtract 15 from 28, we get 13.
Take the next digit (0) from the dividend and append it to 13, then repeat: 130 / 15

Moving on to step 5:
15 goes into 130 8 times with a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 918.0
Subtract 120 from 130 to get 10.
Grab the next digit (9) from the dividend, add it to 10, then carry on: 109 / 15

Step 6:
When dividing 109 by 15, we get 7 with a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 9187.0
If we take 105 away from 109, we end up with 4.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 15

On to step 7:
15 can be fit into 46 3 times, resulting in a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 91873.0
Subtracting 45 from 46 leaves us with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 15

Step 8:
15 can be fit into 14 0 times, resulting in a remainder of 14.
The next digit of our result is 0. 
Result so far: 918730.0
Deduct 0 from 14 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 9:
15 can be fit into 140 9 times, resulting in a remainder of 5.
The next digit of our result is 9. 
Result so far: 918730.9
Deduct 135 from 140 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 10:
50 divided by 15 is 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 918730.93
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 11:
15 can be fit into 50 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 918730.933
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 918730.933 with a remainder of 0.0005.