780002 ÷ 90 
We want to divide 780002 by 90.

Advancing to step 1:
90 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 90

On to step 2:
90 can be fit into 78 0 times, resulting in a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Include the next digit (0) from the dividend after 78, then repeat: 780 / 90

Step 3:
780 divided by 90 is 8 with a remainder of 60.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 720 from 780 to get 60.
Include the next digit (0) from the dividend after 60, then repeat: 600 / 90

Going ahead to step 4:
600 divided by 90 is 6 with a remainder of 60.
Record the quotient 6 as the next digit in the result. 
Result so far: 86.0
If we take 540 away from 600, we end up with 60.
Append the next digit (0) from the dividend to 60 and continue with: 600 / 90

Moving on to step 5:
90 can be fit into 600 6 times, resulting in a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 866.0
If we take 540 away from 600, we end up with 60.
Append the next digit (2) from the dividend to 60 and continue with: 602 / 90

Going ahead to step 6:
The number 90 fits into 602 6 times, leaving a remainder of 62.
The next digit of our result is 6. 
Result so far: 8666.0
The remainder is 62 after subtracting 540 from 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 7:
The number 90 fits into 620 6 times, leaving a remainder of 80.
Write down 6 as next digit of the result. 
Result so far: 8666.6
Subtract 540 from 620 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 8:
90 can be fit into 800 8 times, resulting in a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 8666.68
The remainder is 80 after subtracting 720 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 9:
800 divided by 90 is 8 with a remainder of 80.
Write down 8 as next digit of the result. 
Result so far: 8666.688
Subtracting 720 from 800 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 8666.688, with a leftover of 0.008.