780070 divided by 90 
Let's see how many times 90 fits into 780070.

Moving on to step 1:
7 divided by 90 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 90

Moving on to step 2:
When dividing 78 by 90, we get 0 with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Bring next digit (0) of the dividend behind the 78 and repeat the process: 780 / 90

Let's proceed to 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
If we take 720 away from 780, we end up with 60.
Take the next digit (0) from the dividend and append it to 60, then repeat: 600 / 90

Going ahead to step 4:
The number 90 fits into 600 6 times, leaving a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
Deduct 540 from 600 and we're left with 60.
Bring next digit (7) of the dividend behind the 60 and repeat the process: 607 / 90

Advancing to step 5:
The number 90 fits into 607 6 times, leaving a remainder of 67.
Write down 6 as next digit of the result. 
Result so far: 866.0
Subtract 540 from 607 to get 67.
Take the next digit (0) from the dividend and append it to 67, then repeat: 670 / 90

On to step 6:
The number 90 fits into 670 7 times, leaving a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 8667.0
If we subtract 630 from 670, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 7:
400 divided by 90 is 4 with a remainder of 40.
The next digit of our result is 4. 
Result so far: 8667.4
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
The number 90 fits into 400 4 times, leaving a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 8667.44
Subtract 360 from 400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 8667.44, and the remainder is 0.04.