We're dividing 315121 by 23 
Let's see how many times 23 fits into 315121.

On to step 1:
The number 23 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 23

Going ahead to step 2:
23 goes into 31 1 times with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 23 away from 31, we end up with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 23

Advancing to step 3:
23 can be fit into 85 3 times, resulting in a remainder of 16.
The next digit of our result is 3. 
Result so far: 13.0
Subtracting 69 from 85 leaves us with 16.
Append the next digit (1) from the dividend to 16 and continue with: 161 / 23

Moving on to step 4:
23 can be fit into 161 7 times, resulting in a remainder of 0.
The next digit of our result is 7. 
Result so far: 137.0
Subtracting 161 from 161 leaves us with 0.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 23

Going ahead to step 5:
If we divide 2 by 23, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 1370.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 23

On to step 6:
When dividing 21 by 23, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 13700.0
Subtracting 0 from 21 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 7:
When dividing 210 by 23, we get 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 13700.9
Deduct 207 from 210 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 8:
23 goes into 30 1 times with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 13700.91
Subtracting 23 from 30 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 9:
70 divided by 23 is 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 13700.913
Subtract 69 from 70 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 10:
10 divided by 23 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 13700.913
The remainder is 10 after subtracting 0 from 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 11:
23 can be fit into 100 4 times, resulting in a remainder of 8.
The next digit of our result is 4. 
Result so far: 13700.91304
The remainder is 8 after subtracting 92 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
23 can be fit into 80 3 times, resulting in a remainder of 11.
The next digit of our result is 3. 
Result so far: 13700.913043
Deduct 69 from 80 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 13:
When dividing 110 by 23, we get 4 with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 13700.9130434
Subtracting 92 from 110 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 14:
If we divide 180 by 23, we get 7 and a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 13700.91304347
Deduct 161 from 180 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Our division results in 13700.91304347 with a remaining 1.9e-08.