80666457 ÷ 822 
Our goal is to divide 80666457 by 822.

Let's proceed to step 1:
822 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 822

Step 2:
The number 822 fits into 80 0 times, leaving a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Grab the next digit (6) from the dividend, add it to 80, then carry on: 806 / 822

On to step 3:
When dividing 806 by 822, we get 0 with a remainder of 806.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 806 leaves us with 806.
Take the next digit (6) from the dividend and append it to 806, then repeat: 8066 / 822

Let's proceed to step 4:
822 can be fit into 8066 9 times, resulting in a remainder of 668.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we take 7398 away from 8066, we end up with 668.
Fetch the next digit (6) from the dividend, attach it to 668 and continue: 6686 / 822

Step 5:
822 goes into 6686 8 times with a remainder of 110.
Record the quotient 8 as the next digit in the result. 
Result so far: 98.0
The remainder is 110 after subtracting 6576 from 6686.
Append the next digit (4) from the dividend to 110 and continue with: 1104 / 822

Let's proceed to step 6:
822 can be fit into 1104 1 times, resulting in a remainder of 282.
Use 1 as the next digit of our solution. 
Result so far: 981.0
If we subtract 822 from 1104, we get 282.
Bring next digit (5) of the dividend behind the 282 and repeat the process: 2825 / 822

Going ahead to step 7:
822 goes into 2825 3 times with a remainder of 359.
Put 3 as the next digit of the answer. 
Result so far: 9813.0
If we subtract 2466 from 2825, we get 359.
Fetch the next digit (7) from the dividend, attach it to 359 and continue: 3597 / 822

Moving on to step 8:
If we divide 3597 by 822, we get 4 and a remainder of 309.
Record the quotient 4 as the next digit in the result. 
Result so far: 98134.0
If we subtract 3288 from 3597, we get 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Let's proceed to step 9:
822 goes into 3090 3 times with a remainder of 624.
Write down 3 as next digit of the result. 
Result so far: 98134.3
If we take 2466 away from 3090, we end up with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Step 10:
6240 divided by 822 is 7 with a remainder of 486.
Write down 7 as next digit of the result. 
Result so far: 98134.37
Deduct 5754 from 6240 and we're left with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Advancing to step 11:
If we divide 4860 by 822, we get 5 and a remainder of 750.
Record the quotient 5 as the next digit in the result. 
Result so far: 98134.375
If we take 4110 away from 4860, we end up with 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Let's proceed to step 12:
822 can be fit into 7500 9 times, resulting in a remainder of 102.
The next digit of our result is 9. 
Result so far: 98134.3759
If we subtract 7398 from 7500, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Step 13:
822 can be fit into 1020 1 times, resulting in a remainder of 198.
Write down 1 as next digit of the result. 
Result so far: 98134.37591
Subtract 822 from 1020 to get 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Going ahead to step 14:
The number 822 fits into 1980 2 times, leaving a remainder of 336.
Use 2 as the next digit of our solution. 
Result so far: 98134.375912
Deduct 1644 from 1980 and we're left with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

On to step 15:
The number 822 fits into 3360 4 times, leaving a remainder of 72.
The next digit of our result is 4. 
Result so far: 98134.3759124
If we take 3288 away from 3360, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 16:
720 divided by 822 is 0 with a remainder of 720.
Record the quotient 0 as the next digit in the result. 
Result so far: 98134.3759124
The remainder is 720 after subtracting 0 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

The final outcome is 98134.3759124, with a leftover of 7.2e-07.