We look at the division of 780647 by 90 
We want to divide 780647 by 90.

Let's proceed to step 1:
When dividing 7 by 90, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 90

Step 2:
78 divided by 90 is 0 with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Include the next digit (0) from the dividend after 78, then repeat: 780 / 90

Going ahead to step 3:
When dividing 780 by 90, we get 8 with a remainder of 60.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 720 from 780 to get 60.
Take the next digit (6) from the dividend and append it to 60, then repeat: 606 / 90

Step 4:
90 can be fit into 606 6 times, resulting in a remainder of 66.
Record the quotient 6 as the next digit in the result. 
Result so far: 86.0
If we subtract 540 from 606, we get 66.
Grab the next digit (4) from the dividend, add it to 66, then carry on: 664 / 90

Advancing to step 5:
664 divided by 90 is 7 with a remainder of 34.
Write down 7 as next digit of the result. 
Result so far: 867.0
Deduct 630 from 664 and we're left with 34.
Grab the next digit (7) from the dividend, add it to 34, then carry on: 347 / 90

Going ahead to step 6:
347 divided by 90 is 3 with a remainder of 77.
Put 3 as the next digit of the answer. 
Result so far: 8673.0
If we take 270 away from 347, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 7:
90 can be fit into 770 8 times, resulting in a remainder of 50.
Record the quotient 8 as the next digit in the result. 
Result so far: 8673.8
If we subtract 720 from 770, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
When dividing 500 by 90, we get 5 with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 8673.85
If we take 450 away from 500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 9:
When dividing 500 by 90, we get 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 8673.855
If we subtract 450 from 500, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 8673.855 and a remainder of 0.005.