Let's divide 312988 by 91
We want to divide 312988 by 91.

Let's proceed to step 1:
When dividing 3 by 91, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 91

Step 2:
31 divided by 91 is 0 with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 31, we get 31.
Grab the next digit (2) from the dividend, add it to 31, then carry on: 312 / 91

Advancing to step 3:
The number 91 fits into 312 3 times, leaving a remainder of 39.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 273 from 312 leaves us with 39.
Take the next digit (9) from the dividend and append it to 39, then repeat: 399 / 91

On to step 4:
If we divide 399 by 91, we get 4 and a remainder of 35.
Put 4 as the next digit of the answer. 
Result so far: 34.0
If we take 364 away from 399, we end up with 35.
Include the next digit (8) from the dividend after 35, then repeat: 358 / 91

Going ahead to step 5:
91 goes into 358 3 times with a remainder of 85.
Write down 3 as next digit of the result. 
Result so far: 343.0
If we subtract 273 from 358, we get 85.
Fetch the next digit (8) from the dividend, attach it to 85 and continue: 858 / 91

Going ahead to step 6:
91 can be fit into 858 9 times, resulting in a remainder of 39.
Write down 9 as next digit of the result. 
Result so far: 3439.0
If we subtract 819 from 858, we get 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 7:
91 goes into 390 4 times with a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 3439.4
Deduct 364 from 390 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 8:
91 can be fit into 260 2 times, resulting in a remainder of 78.
Write down 2 as next digit of the result. 
Result so far: 3439.42
Subtracting 182 from 260 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 9:
91 goes into 780 8 times with a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 3439.428
If we take 728 away from 780, we end up 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.

Step 10:
If we divide 520 by 91, we get 5 and a remainder of 65.
Put 5 as the next digit of the answer. 
Result so far: 3439.4285
If we take 455 away from 520, we end up 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.

On to step 11:
650 divided by 91 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 3439.42857
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 12:
When dividing 130 by 91, we get 1 with a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 3439.428571
Subtract 91 from 130 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 13:
The number 91 fits into 390 4 times, leaving a remainder of 26.
The next digit of our result is 4. 
Result so far: 3439.4285714
If we take 364 away from 390, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 14:
If we divide 260 by 91, we get 2 and a remainder of 78.
Record the quotient 2 as the next digit in the result. 
Result so far: 3439.42857142
If we take 182 away from 260, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Our division results in 3439.42857142 with a remaining 7.8e-08.