We divide 81639994 by 997
We want to divide 81639994 by 997.

Step 1:
When dividing 8 by 997, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 997

Moving on to step 2:
The number 997 fits into 81 0 times, leaving a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Take the next digit (6) from the dividend and append it to 81, then repeat: 816 / 997

Going ahead to step 3:
816 divided by 997 is 0 with a remainder of 816.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 816, we get 816.
Take the next digit (3) from the dividend and append it to 816, then repeat: 8163 / 997

Moving on to step 4:
997 can be fit into 8163 8 times, resulting in a remainder of 187.
The next digit of our result is 8. 
Result so far: 8.0
Deduct 7976 from 8163 and we're left with 187.
Bring next digit (9) of the dividend behind the 187 and repeat the process: 1879 / 997

Step 5:
The number 997 fits into 1879 1 times, leaving a remainder of 882.
Write down 1 as next digit of the result. 
Result so far: 81.0
The remainder is 882 after subtracting 997 from 1879.
Grab the next digit (9) from the dividend, add it to 882, then carry on: 8829 / 997

On to step 6:
If we divide 8829 by 997, we get 8 and a remainder of 853.
The next digit of our result is 8. 
Result so far: 818.0
The remainder is 853 after subtracting 7976 from 8829.
Bring next digit (9) of the dividend behind the 853 and repeat the process: 8539 / 997

Moving on to step 7:
When dividing 8539 by 997, we get 8 with a remainder of 563.
Record the quotient 8 as the next digit in the result. 
Result so far: 8188.0
If we subtract 7976 from 8539, we get 563.
Take the next digit (4) from the dividend and append it to 563, then repeat: 5634 / 997

Moving on to step 8:
5634 divided by 997 is 5 with a remainder of 649.
Put 5 as the next digit of the answer. 
Result so far: 81885.0
The remainder is 649 after subtracting 4985 from 5634.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6490, and continue the process.

Going ahead to step 9:
997 goes into 6490 6 times with a remainder of 508.
Use 6 as the next digit of our solution. 
Result so far: 81885.6
The remainder is 508 after subtracting 5982 from 6490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Advancing to step 10:
The number 997 fits into 5080 5 times, leaving a remainder of 95.
The number 5 becomes the next digit in our result. 
Result so far: 81885.65
The remainder is 95 after subtracting 4985 from 5080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

On to step 11:
997 can be fit into 950 0 times, resulting in a remainder of 950.
Record the quotient 0 as the next digit in the result. 
Result so far: 81885.65
If we subtract 0 from 950, we get 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9500, and continue the process.

Moving on to step 12:
If we divide 9500 by 997, we get 9 and a remainder of 527.
The next digit of our result is 9. 
Result so far: 81885.6509
If we take 8973 away from 9500, we end up with 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Moving on to step 13:
The number 997 fits into 5270 5 times, leaving a remainder of 285.
Use 5 as the next digit of our solution. 
Result so far: 81885.65095
Subtract 4985 from 5270 to get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Going ahead to step 14:
When dividing 2850 by 997, we get 2 with a remainder of 856.
Record the quotient 2 as the next digit in the result. 
Result so far: 81885.650952
The remainder is 856 after subtracting 1994 from 2850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8560, and continue the process.

Advancing to step 15:
997 goes into 8560 8 times with a remainder of 584.
Write down 8 as next digit of the result. 
Result so far: 81885.6509528
Deduct 7976 from 8560 and we're left with 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Going ahead to step 16:
The number 997 fits into 5840 5 times, leaving a remainder of 855.
The number 5 becomes the next digit in our result. 
Result so far: 81885.65095285
If we subtract 4985 from 5840, we get 855.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8550, and continue the process.

The quotient of the division is 81885.65095285, and the remainder is 8.55e-07.