80899891 divided by 951 
Our goal is to divide 80899891 by 951.

Going ahead to step 1:
The number 951 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 951

Going ahead to step 2:
951 goes into 80 0 times with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Bring next digit (8) of the dividend behind the 80 and repeat the process: 808 / 951

Moving on to step 3:
951 goes into 808 0 times with a remainder of 808.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 808 and we're left with 808.
Grab the next digit (9) from the dividend, add it to 808, then carry on: 8089 / 951

Let's proceed to step 4:
951 goes into 8089 8 times with a remainder of 481.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 7608 from 8089 to get 481.
Take the next digit (9) from the dividend and append it to 481, then repeat: 4819 / 951

Let's proceed to step 5:
If we divide 4819 by 951, we get 5 and a remainder of 64.
The next digit of our result is 5. 
Result so far: 85.0
If we subtract 4755 from 4819, we get 64.
Bring next digit (8) of the dividend behind the 64 and repeat the process: 648 / 951

Step 6:
951 can be fit into 648 0 times, resulting in a remainder of 648.
The next digit of our result is 0. 
Result so far: 850.0
Deduct 0 from 648 and we're left with 648.
Bring next digit (9) of the dividend behind the 648 and repeat the process: 6489 / 951

Moving on to step 7:
951 can be fit into 6489 6 times, resulting in a remainder of 783.
Use 6 as the next digit of our solution. 
Result so far: 8506.0
Subtracting 5706 from 6489 leaves us with 783.
Fetch the next digit (1) from the dividend, attach it to 783 and continue: 7831 / 951

Moving on to step 8:
When dividing 7831 by 951, we get 8 with a remainder of 223.
The next digit of our result is 8. 
Result so far: 85068.0
If we subtract 7608 from 7831, we get 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Advancing to step 9:
The number 951 fits into 2230 2 times, leaving a remainder of 328.
The next digit of our result is 2. 
Result so far: 85068.2
The remainder is 328 after subtracting 1902 from 2230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Going ahead to step 10:
951 goes into 3280 3 times with a remainder of 427.
Write down 3 as next digit of the result. 
Result so far: 85068.23
If we subtract 2853 from 3280, we get 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Step 11:
If we divide 4270 by 951, we get 4 and a remainder of 466.
Put 4 as the next digit of the answer. 
Result so far: 85068.234
The remainder is 466 after subtracting 3804 from 4270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Moving on to step 12:
951 can be fit into 4660 4 times, resulting in a remainder of 856.
Record the quotient 4 as the next digit in the result. 
Result so far: 85068.2344
Subtract 3804 from 4660 to get 856.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8560, and continue the process.

The final outcome is 85068.2344, with a leftover of 0.00856.