We look at the division of 80403784 by 780 
We want to divide 80403784 by 780.

On to step 1:
If we divide 8 by 780, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 780

Going ahead to step 2:
80 divided by 780 is 0 with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Include the next digit (4) from the dividend after 80, then repeat: 804 / 780

On to step 3:
780 can be fit into 804 1 times, resulting in a remainder of 24.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 780 from 804 to get 24.
Include the next digit (0) from the dividend after 24, then repeat: 240 / 780

Moving on to step 4:
If we divide 240 by 780, we get 0 and a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 10.0
The remainder is 240 after subtracting 0 from 240.
Take the next digit (3) from the dividend and append it to 240, then repeat: 2403 / 780

On to step 5:
When dividing 2403 by 780, we get 3 with a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 103.0
The remainder is 63 after subtracting 2340 from 2403.
Fetch the next digit (7) from the dividend, attach it to 63 and continue: 637 / 780

Moving on to step 6:
637 divided by 780 is 0 with a remainder of 637.
Put 0 as the next digit of the answer. 
Result so far: 1030.0
Deduct 0 from 637 and we're left with 637.
Grab the next digit (8) from the dividend, add it to 637, then carry on: 6378 / 780

Step 7:
6378 divided by 780 is 8 with a remainder of 138.
Record the quotient 8 as the next digit in the result. 
Result so far: 10308.0
Deduct 6240 from 6378 and we're left with 138.
Bring next digit (4) of the dividend behind the 138 and repeat the process: 1384 / 780

Step 8:
1384 divided by 780 is 1 with a remainder of 604.
Write down 1 as next digit of the result. 
Result so far: 103081.0
If we subtract 780 from 1384, we get 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Let's proceed to step 9:
The number 780 fits into 6040 7 times, leaving a remainder of 580.
Put 7 as the next digit of the answer. 
Result so far: 103081.7
Deduct 5460 from 6040 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Moving on to step 10:
780 can be fit into 5800 7 times, resulting in a remainder of 340.
The next digit of our result is 7. 
Result so far: 103081.77
The remainder is 340 after subtracting 5460 from 5800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

The final outcome is 103081.77, with a leftover of 0.34.