31457813 ÷ 15 
Our goal is to divide 31457813 by 15.

Moving on to step 1:
3 divided by 15 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 15

On to step 2:
15 can be fit into 31 2 times, resulting in a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 30 away from 31, we end up with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 15

Step 3:
The number 15 fits into 14 0 times, leaving a remainder of 14.
The next digit of our result is 0. 
Result so far: 20.0
Subtracting 0 from 14 leaves us with 14.
Include the next digit (5) from the dividend after 14, then repeat: 145 / 15

Let's proceed to step 4:
145 divided by 15 is 9 with a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 209.0
If we subtract 135 from 145, we get 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 15

Moving on to step 5:
If we divide 107 by 15, we get 7 and a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 2097.0
Subtract 105 from 107 to get 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 15

Let's proceed to step 6:
If we divide 28 by 15, we get 1 and a remainder of 13.
The next digit of our result is 1. 
Result so far: 20971.0
The remainder is 13 after subtracting 15 from 28.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 15

On to step 7:
15 goes into 131 8 times with a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 209718.0
If we subtract 120 from 131, we get 11.
Fetch the next digit (3) from the dividend, attach it to 11 and continue: 113 / 15

Step 8:
The number 15 fits into 113 7 times, leaving a remainder of 8.
The number 7 becomes the next digit in our result. 
Result so far: 2097187.0
If we take 105 away from 113, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
15 can be fit into 80 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 2097187.5
Subtracting 75 from 80 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 10:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 2097187.53
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 11:
15 goes into 50 3 times with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 2097187.533
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 2097187.533 with a remainder of 0.0005.