Let's divide 85399271 by 990
Let's see how many times 990 fits into 85399271.

Step 1:
When dividing 8 by 990, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 990

Let's proceed to step 2:
990 can be fit into 85 0 times, resulting in a remainder of 85.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 85, we get 85.
Bring next digit (3) of the dividend behind the 85 and repeat the process: 853 / 990

On to step 3:
The number 990 fits into 853 0 times, leaving a remainder of 853.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 853, we end up with 853.
Fetch the next digit (9) from the dividend, attach it to 853 and continue: 8539 / 990

Advancing to step 4:
If we divide 8539 by 990, we get 8 and a remainder of 619.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 7920 from 8539 and we're left with 619.
Bring next digit (9) of the dividend behind the 619 and repeat the process: 6199 / 990

Step 5:
6199 divided by 990 is 6 with a remainder of 259.
Write down 6 as next digit of the result. 
Result so far: 86.0
The remainder is 259 after subtracting 5940 from 6199.
Fetch the next digit (2) from the dividend, attach it to 259 and continue: 2592 / 990

On to step 6:
2592 divided by 990 is 2 with a remainder of 612.
Use 2 as the next digit of our solution. 
Result so far: 862.0
If we take 1980 away from 2592, we end up with 612.
Fetch the next digit (7) from the dividend, attach it to 612 and continue: 6127 / 990

On to step 7:
If we divide 6127 by 990, we get 6 and a remainder of 187.
The next digit of our result is 6. 
Result so far: 8626.0
If we take 5940 away from 6127, we end up with 187.
Include the next digit (1) from the dividend after 187, then repeat: 1871 / 990

Going ahead to step 8:
1871 divided by 990 is 1 with a remainder of 881.
Record the quotient 1 as the next digit in the result. 
Result so far: 86261.0
If we take 990 away from 1871, we end up with 881.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8810, and continue the process.

On to step 9:
When dividing 8810 by 990, we get 8 with a remainder of 890.
Use 8 as the next digit of our solution. 
Result so far: 86261.8
Subtracting 7920 from 8810 leaves us with 890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8900, and continue the process.

Step 10:
If we divide 8900 by 990, we get 8 and a remainder of 980.
Put 8 as the next digit of the answer. 
Result so far: 86261.88
If we subtract 7920 from 8900, we get 980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9800, and continue the process.

The final result is 86261.88 with a remainder of 0.98.