We're dividing 66994455 by 991 
We're looking to find how many times 991 goes into 66994455.

On to step 1:
The number 991 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 991

Advancing to step 2:
991 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Take the next digit (9) from the dividend and append it to 66, then repeat: 669 / 991

Step 3:
If we divide 669 by 991, we get 0 and a remainder of 669.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 669, we end up with 669.
Take the next digit (9) from the dividend and append it to 669, then repeat: 6699 / 991

On to step 4:
When dividing 6699 by 991, we get 6 with a remainder of 753.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 5946 from 6699 to get 753.
Fetch the next digit (4) from the dividend, attach it to 753 and continue: 7534 / 991

Advancing to step 5:
991 can be fit into 7534 7 times, resulting in a remainder of 597.
Record the quotient 7 as the next digit in the result. 
Result so far: 67.0
Subtracting 6937 from 7534 leaves us with 597.
Grab the next digit (4) from the dividend, add it to 597, then carry on: 5974 / 991

Advancing to step 6:
5974 divided by 991 is 6 with a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 676.0
The remainder is 28 after subtracting 5946 from 5974.
Include the next digit (5) from the dividend after 28, then repeat: 285 / 991

Advancing to step 7:
285 divided by 991 is 0 with a remainder of 285.
Put 0 as the next digit of the answer. 
Result so far: 6760.0
The remainder is 285 after subtracting 0 from 285.
Bring next digit (5) of the dividend behind the 285 and repeat the process: 2855 / 991

Going ahead to step 8:
If we divide 2855 by 991, we get 2 and a remainder of 873.
The next digit of our result is 2. 
Result so far: 67602.0
Deduct 1982 from 2855 and we're left with 873.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8730, and continue the process.

Moving on to step 9:
When dividing 8730 by 991, we get 8 with a remainder of 802.
Put 8 as the next digit of the answer. 
Result so far: 67602.8
If we subtract 7928 from 8730, we get 802.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8020, and continue the process.

Going ahead to step 10:
When dividing 8020 by 991, we get 8 with a remainder of 92.
Use 8 as the next digit of our solution. 
Result so far: 67602.88
Subtract 7928 from 8020 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

The quotient of the division is 67602.88, and the remainder is 0.092.