We're dividing 91016621 by 660 
We want to divide 91016621 by 660.

Step 1:
9 divided by 660 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 660

Step 2:
660 can be fit into 91 0 times, resulting in a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Bring next digit (0) of the dividend behind the 91 and repeat the process: 910 / 660

Advancing to step 3:
660 goes into 910 1 times with a remainder of 250.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 660 from 910, we get 250.
Take the next digit (1) from the dividend and append it to 250, then repeat: 2501 / 660

Going ahead to step 4:
If we divide 2501 by 660, we get 3 and a remainder of 521.
The next digit of our result is 3. 
Result so far: 13.0
Deduct 1980 from 2501 and we're left with 521.
Grab the next digit (6) from the dividend, add it to 521, then carry on: 5216 / 660

Let's proceed to step 5:
If we divide 5216 by 660, we get 7 and a remainder of 596.
Record the quotient 7 as the next digit in the result. 
Result so far: 137.0
If we subtract 4620 from 5216, we get 596.
Fetch the next digit (6) from the dividend, attach it to 596 and continue: 5966 / 660

Moving on to step 6:
The number 660 fits into 5966 9 times, leaving a remainder of 26.
Record the quotient 9 as the next digit in the result. 
Result so far: 1379.0
If we take 5940 away from 5966, we end up with 26.
Take the next digit (2) from the dividend and append it to 26, then repeat: 262 / 660

Advancing to step 7:
The number 660 fits into 262 0 times, leaving a remainder of 262.
The next digit of our result is 0. 
Result so far: 13790.0
Subtract 0 from 262 to get 262.
Take the next digit (1) from the dividend and append it to 262, then repeat: 2621 / 660

Moving on to step 8:
660 can be fit into 2621 3 times, resulting in a remainder of 641.
Put 3 as the next digit of the answer. 
Result so far: 137903.0
Deduct 1980 from 2621 and we're left with 641.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6410, and continue the process.

On to step 9:
660 goes into 6410 9 times with a remainder of 470.
Put 9 as the next digit of the answer. 
Result so far: 137903.9
Subtracting 5940 from 6410 leaves us with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Advancing to step 10:
660 can be fit into 4700 7 times, resulting in a remainder of 80.
Use 7 as the next digit of our solution. 
Result so far: 137903.97
If we subtract 4620 from 4700, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 11:
660 can be fit into 800 1 times, resulting in a remainder of 140.
Write down 1 as next digit of the result. 
Result so far: 137903.971
Subtracting 660 from 800 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 12:
1400 divided by 660 is 2 with a remainder of 80.
The next digit of our result is 2. 
Result so far: 137903.9712
If we subtract 1320 from 1400, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 13:
660 goes into 800 1 times with a remainder of 140.
Use 1 as the next digit of our solution. 
Result so far: 137903.97121
If we subtract 660 from 800, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 14:
660 goes into 1400 2 times with a remainder of 80.
The number 2 becomes the next digit in our result. 
Result so far: 137903.971212
The remainder is 80 after subtracting 1320 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 15:
When dividing 800 by 660, we get 1 with a remainder of 140.
Write down 1 as next digit of the result. 
Result so far: 137903.9712121
Deduct 660 from 800 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 16:
660 goes into 1400 2 times with a remainder of 80.
The next digit of our result is 2. 
Result so far: 137903.97121212
The remainder is 80 after subtracting 1320 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

After the division, we end up with 137903.97121212 and a remainder of 8e-08.