We divide 307980 by 91
We want to figure out the number of times 307980 can be divided by 91.

Let's proceed to step 1:
91 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 91

Let's proceed to step 2:
30 divided by 91 is 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 30, we get 30.
Append the next digit (7) from the dividend to 30 and continue with: 307 / 91

On to step 3:
307 divided by 91 is 3 with a remainder of 34.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 273 from 307 to get 34.
Bring next digit (9) of the dividend behind the 34 and repeat the process: 349 / 91

Moving on to step 4:
If we divide 349 by 91, we get 3 and a remainder of 76.
Put 3 as the next digit of the answer. 
Result so far: 33.0
If we subtract 273 from 349, we get 76.
Grab the next digit (8) from the dividend, add it to 76, then carry on: 768 / 91

Let's proceed to step 5:
The number 91 fits into 768 8 times, leaving a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 338.0
Subtracting 728 from 768 leaves us with 40.
Include the next digit (0) from the dividend after 40, then repeat: 400 / 91

Moving on to step 6:
When dividing 400 by 91, we get 4 with a remainder of 36.
The next digit of our result is 4. 
Result so far: 3384.0
If we take 364 away from 400, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 7:
When dividing 360 by 91, we get 3 with a remainder of 87.
Write down 3 as next digit of the result. 
Result so far: 3384.3
Subtracting 273 from 360 leaves us with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Let's proceed to step 8:
When dividing 870 by 91, we get 9 with a remainder of 51.
The number 9 becomes the next digit in our result. 
Result so far: 3384.39
If we subtract 819 from 870, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 9:
91 can be fit into 510 5 times, resulting in a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 3384.395
The remainder is 55 after subtracting 455 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 10:
When dividing 550 by 91, we get 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 3384.3956
Subtracting 546 from 550 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 11:
If we divide 40 by 91, we get 0 and a remainder of 40.
The next digit of our result is 0. 
Result so far: 3384.3956
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 12:
400 divided by 91 is 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 3384.395604
If we take 364 away from 400, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 13:
The number 91 fits into 360 3 times, leaving a remainder of 87.
Write down 3 as next digit of the result. 
Result so far: 3384.3956043
If we take 273 away from 360, we end up with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Advancing to step 14:
870 divided by 91 is 9 with a remainder of 51.
Put 9 as the next digit of the answer. 
Result so far: 3384.39560439
Deduct 819 from 870 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

The final outcome is 3384.39560439, with a leftover of 5.1e-08.