Let's divide 312099 by 85
Let's see how many times 85 fits into 312099.

Advancing to step 1:
85 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 85

On to step 2:
85 goes into 31 0 times with a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Append the next digit (2) from the dividend to 31 and continue with: 312 / 85

Going ahead to step 3:
85 can be fit into 312 3 times, resulting in a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 255 from 312, we get 57.
Bring next digit (0) of the dividend behind the 57 and repeat the process: 570 / 85

Moving on to step 4:
85 goes into 570 6 times with a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 36.0
If we subtract 510 from 570, we get 60.
Bring next digit (9) of the dividend behind the 60 and repeat the process: 609 / 85

Advancing to step 5:
If we divide 609 by 85, we get 7 and a remainder of 14.
The next digit of our result is 7. 
Result so far: 367.0
The remainder is 14 after subtracting 595 from 609.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 85

Advancing to step 6:
If we divide 149 by 85, we get 1 and a remainder of 64.
Use 1 as the next digit of our solution. 
Result so far: 3671.0
Subtracting 85 from 149 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 7:
85 goes into 640 7 times with a remainder of 45.
Write down 7 as next digit of the result. 
Result so far: 3671.7
Subtracting 595 from 640 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 8:
The number 85 fits into 450 5 times, leaving a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 3671.75
Subtract 425 from 450 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 9:
250 divided by 85 is 2 with a remainder of 80.
Record the quotient 2 as the next digit in the result. 
Result so far: 3671.752
Deduct 170 from 250 and we're left with 80.
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 10:
85 can be fit into 800 9 times, resulting in a remainder of 35.
Write down 9 as next digit of the result. 
Result so far: 3671.7529
The remainder is 35 after subtracting 765 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 11:
The number 85 fits into 350 4 times, leaving a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 3671.75294
Subtracting 340 from 350 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 12:
When dividing 100 by 85, we get 1 with a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 3671.752941
Deduct 85 from 100 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 13:
When dividing 150 by 85, we get 1 with a remainder of 65.
Write down 1 as next digit of the result. 
Result so far: 3671.7529411
Subtracting 85 from 150 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.

Our division results in 3671.7529411 with a remaining 6.5e-07.