We look at the division of 312377 by 91 
We want to figure out the number of times 312377 can be divided by 91.

On to step 1:
When dividing 3 by 91, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 91

Advancing to step 2:
If we divide 31 by 91, we get 0 and a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 31 and we're left with 31.
Take the next digit (2) from the dividend and append it to 31, then repeat: 312 / 91

On to step 3:
If we divide 312 by 91, we get 3 and a remainder of 39.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 39 after subtracting 273 from 312.
Grab the next digit (3) from the dividend, add it to 39, then carry on: 393 / 91

Advancing to step 4:
If we divide 393 by 91, we get 4 and a remainder of 29.
Write down 4 as next digit of the result. 
Result so far: 34.0
The remainder is 29 after subtracting 364 from 393.
Bring next digit (7) of the dividend behind the 29 and repeat the process: 297 / 91

On to step 5:
When dividing 297 by 91, we get 3 with a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 343.0
Deduct 273 from 297 and we're left with 24.
Include the next digit (7) from the dividend after 24, then repeat: 247 / 91

Advancing to step 6:
91 can be fit into 247 2 times, resulting in a remainder of 65.
Use 2 as the next digit of our solution. 
Result so far: 3432.0
Subtracting 182 from 247 leaves us 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 7:
When dividing 650 by 91, we get 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 3432.7
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.

Let's proceed to step 8:
The number 91 fits into 130 1 times, leaving a remainder of 39.
The next digit of our result is 1. 
Result so far: 3432.71
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 can be fit into 390 4 times, resulting in a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 3432.714
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.

Moving on to step 10:
The number 91 fits into 260 2 times, leaving a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 3432.7142
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.

Advancing to step 11:
The number 91 fits into 780 8 times, leaving a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 3432.71428
Subtract 728 from 780 to get 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 12:
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: 3432.714285
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.

Going ahead to step 13:
91 can be fit into 650 7 times, resulting in a remainder of 13.
The next digit of our result is 7. 
Result so far: 3432.7142857
The remainder is 13 after subtracting 637 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 14:
The number 91 fits into 130 1 times, leaving a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 3432.71428571
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.

After the division, we end up with 3432.71428571 and a remainder of 3.9e-08.