We look at the division of 91966661 by 121 
We want to divide 91966661 by 121.

Going ahead to step 1:
121 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 121

On to step 2:
When dividing 91 by 121, we get 0 with a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Bring next digit (9) of the dividend behind the 91 and repeat the process: 919 / 121

Advancing to step 3:
The number 121 fits into 919 7 times, leaving a remainder of 72.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 72 after subtracting 847 from 919.
Fetch the next digit (6) from the dividend, attach it to 72 and continue: 726 / 121

Advancing to step 4:
The number 121 fits into 726 6 times, leaving a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 76.0
Deduct 726 from 726 and we're left with 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 121

Let's proceed to step 5:
When dividing 6 by 121, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 760.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 121

Going ahead to step 6:
When dividing 66 by 121, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 7600.0
If we subtract 0 from 66, we get 66.
Grab the next digit (6) from the dividend, add it to 66, then carry on: 666 / 121

On to step 7:
121 can be fit into 666 5 times, resulting in a remainder of 61.
Record the quotient 5 as the next digit in the result. 
Result so far: 76005.0
The remainder is 61 after subtracting 605 from 666.
Fetch the next digit (1) from the dividend, attach it to 61 and continue: 611 / 121

On to step 8:
When dividing 611 by 121, we get 5 with a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 760055.0
If we take 605 away from 611, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
If we divide 60 by 121, we get 0 and a remainder of 60.
The next digit of our result is 0. 
Result so far: 760055.0
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 10:
600 divided by 121 is 4 with a remainder of 116.
Write down 4 as next digit of the result. 
Result so far: 760055.04
If we subtract 484 from 600, we get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Let's proceed to step 11:
When dividing 1160 by 121, we get 9 with a remainder of 71.
Use 9 as the next digit of our solution. 
Result so far: 760055.049
The remainder is 71 after subtracting 1089 from 1160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 12:
710 divided by 121 is 5 with a remainder of 105.
The number 5 becomes the next digit in our result. 
Result so far: 760055.0495
Subtract 605 from 710 to get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Moving on to step 13:
The number 121 fits into 1050 8 times, leaving a remainder of 82.
Write down 8 as next digit of the result. 
Result so far: 760055.04958
If we subtract 968 from 1050, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 14:
820 divided by 121 is 6 with a remainder of 94.
The next digit of our result is 6. 
Result so far: 760055.049586
Subtracting 726 from 820 leaves us with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

On to step 15:
The number 121 fits into 940 7 times, leaving a remainder of 93.
The next digit of our result is 7. 
Result so far: 760055.0495867
Deduct 847 from 940 and we're left with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Advancing to step 16:
930 divided by 121 is 7 with a remainder of 83.
Use 7 as the next digit of our solution. 
Result so far: 760055.04958677
Deduct 847 from 930 and we're left with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

After the division, we end up with 760055.04958677 and a remainder of 8.3e-08.