661908 ÷ 91 
Let's see how many times 91 fits into 661908.

Step 1:
91 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 91

On to step 2:
When dividing 66 by 91, we get 0 with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Take the next digit (1) from the dividend and append it to 66, then repeat: 661 / 91

Advancing to step 3:
91 goes into 661 7 times with a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 24 after subtracting 637 from 661.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 91

Advancing to step 4:
When dividing 249 by 91, we get 2 with a remainder of 67.
The next digit of our result is 2. 
Result so far: 72.0
Subtract 182 from 249 to get 67.
Bring next digit (0) of the dividend behind the 67 and repeat the process: 670 / 91

Going ahead to step 5:
The number 91 fits into 670 7 times, leaving a remainder of 33.
Use 7 as the next digit of our solution. 
Result so far: 727.0
If we subtract 637 from 670, we get 33.
Take the next digit (8) from the dividend and append it to 33, then repeat: 338 / 91

Moving on to step 6:
91 can be fit into 338 3 times, resulting in a remainder of 65.
Write down 3 as next digit of the result. 
Result so far: 7273.0
Deduct 273 from 338 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 7:
If we divide 650 by 91, we get 7 and a remainder of 13.
The next digit of our result is 7. 
Result so far: 7273.7
If we take 637 away from 650, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 8:
The number 91 fits into 130 1 times, leaving a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 7273.71
If we take 91 away from 130, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 9:
91 goes into 390 4 times with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 7273.714
Subtract 364 from 390 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 10:
If we divide 260 by 91, we get 2 and a remainder of 78.
The number 2 becomes the next digit in our result. 
Result so far: 7273.7142
If we subtract 182 from 260, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 11:
780 divided by 91 is 8 with a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 7273.71428
Subtracting 728 from 780 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 12:
91 goes into 520 5 times with a remainder of 65.
Use 5 as the next digit of our solution. 
Result so far: 7273.714285
Deduct 455 from 520 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 13:
If we divide 650 by 91, we get 7 and a remainder of 13.
The next digit of our result is 7. 
Result so far: 7273.7142857
Subtract 637 from 650 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 14:
If we divide 130 by 91, we get 1 and a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 7273.71428571
If we take 91 away from 130, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final result is 7273.71428571 with a remainder of 3.9e-08.