We're dividing 990636 by 80 
Our goal is to divide 990636 by 80.

On to step 1:
9 divided by 80 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 80

Going ahead to step 2:
When dividing 99 by 80, we get 1 with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 19 after subtracting 80 from 99.
Bring next digit (0) of the dividend behind the 19 and repeat the process: 190 / 80

Moving on to step 3:
80 goes into 190 2 times with a remainder of 30.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we subtract 160 from 190, we get 30.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 80

Moving on to step 4:
The number 80 fits into 306 3 times, leaving a remainder of 66.
Record the quotient 3 as the next digit in the result. 
Result so far: 123.0
Subtract 240 from 306 to get 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 80

Advancing to step 5:
663 divided by 80 is 8 with a remainder of 23.
Put 8 as the next digit of the answer. 
Result so far: 1238.0
The remainder is 23 after subtracting 640 from 663.
Fetch the next digit (6) from the dividend, attach it to 23 and continue: 236 / 80

Moving on to step 6:
If we divide 236 by 80, we get 2 and a remainder of 76.
Use 2 as the next digit of our solution. 
Result so far: 12382.0
Subtracting 160 from 236 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 7:
80 goes into 760 9 times with a remainder of 40.
Use 9 as the next digit of our solution. 
Result so far: 12382.9
If we subtract 720 from 760, 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.

Going ahead to step 8:
When dividing 400 by 80, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 12382.95
If we take 400 away from 400, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 12382.95
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
0 divided by 80 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 12382.95
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 12382.95, with a leftover of 0.0.