We're dividing 80299486 by 993 
We want to divide 80299486 by 993.

Step 1:
If we divide 8 by 993, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 993

On to step 2:
If we divide 80 by 993, we get 0 and a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 80, we end up with 80.
Include the next digit (2) from the dividend after 80, then repeat: 802 / 993

Going ahead to step 3:
802 divided by 993 is 0 with a remainder of 802.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 802 after subtracting 0 from 802.
Include the next digit (9) from the dividend after 802, then repeat: 8029 / 993

Going ahead to step 4:
The number 993 fits into 8029 8 times, leaving a remainder of 85.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 7944 from 8029 to get 85.
Fetch the next digit (9) from the dividend, attach it to 85 and continue: 859 / 993

Step 5:
The number 993 fits into 859 0 times, leaving a remainder of 859.
The next digit of our result is 0. 
Result so far: 80.0
If we take 0 away from 859, we end up with 859.
Grab the next digit (4) from the dividend, add it to 859, then carry on: 8594 / 993

Step 6:
The number 993 fits into 8594 8 times, leaving a remainder of 650.
The number 8 becomes the next digit in our result. 
Result so far: 808.0
If we take 7944 away from 8594, we end up with 650.
Take the next digit (8) from the dividend and append it to 650, then repeat: 6508 / 993

Advancing to step 7:
If we divide 6508 by 993, we get 6 and a remainder of 550.
Use 6 as the next digit of our solution. 
Result so far: 8086.0
Subtract 5958 from 6508 to get 550.
Fetch the next digit (6) from the dividend, attach it to 550 and continue: 5506 / 993

Moving on to step 8:
If we divide 5506 by 993, we get 5 and a remainder of 541.
The number 5 becomes the next digit in our result. 
Result so far: 80865.0
Subtracting 4965 from 5506 leaves us with 541.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5410, and continue the process.

Advancing to step 9:
993 goes into 5410 5 times with a remainder of 445.
The number 5 becomes the next digit in our result. 
Result so far: 80865.5
Subtract 4965 from 5410 to get 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Step 10:
4450 divided by 993 is 4 with a remainder of 478.
Put 4 as the next digit of the answer. 
Result so far: 80865.54
Deduct 3972 from 4450 and we're left with 478.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4780, and continue the process.

Moving on to step 11:
The number 993 fits into 4780 4 times, leaving a remainder of 808.
Use 4 as the next digit of our solution. 
Result so far: 80865.544
Subtracting 3972 from 4780 leaves us with 808.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8080, and continue the process.

After the division, we end up with 80865.544 and a remainder of 0.0808.