We look at the division of 31213015 by 505 
Let's see how many times 505 fits into 31213015.

Advancing to step 1:
The number 505 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 505

On to step 2:
31 divided by 505 is 0 with a remainder of 31.
Record the quotient 0 as the next digit in the 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 / 505

Advancing to step 3:
505 goes into 312 0 times with a remainder of 312.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 312, we end up with 312.
Fetch the next digit (1) from the dividend, attach it to 312 and continue: 3121 / 505

Going ahead to step 4:
3121 divided by 505 is 6 with a remainder of 91.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 3030 from 3121 to get 91.
Take the next digit (3) from the dividend and append it to 91, then repeat: 913 / 505

Going ahead to step 5:
If we divide 913 by 505, we get 1 and a remainder of 408.
The number 1 becomes the next digit in our result. 
Result so far: 61.0
Subtract 505 from 913 to get 408.
Grab the next digit (0) from the dividend, add it to 408, then carry on: 4080 / 505

Moving on to step 6:
4080 divided by 505 is 8 with a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 618.0
Subtracting 4040 from 4080 leaves us with 40.
Take the next digit (1) from the dividend and append it to 40, then repeat: 401 / 505

Let's proceed to step 7:
If we divide 401 by 505, we get 0 and a remainder of 401.
Write down 0 as next digit of the result. 
Result so far: 6180.0
Subtracting 0 from 401 leaves us with 401.
Grab the next digit (5) from the dividend, add it to 401, then carry on: 4015 / 505

On to step 8:
When dividing 4015 by 505, we get 7 with a remainder of 480.
Use 7 as the next digit of our solution. 
Result so far: 61807.0
Subtracting 3535 from 4015 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 9:
When dividing 4800 by 505, we get 9 with a remainder of 255.
Put 9 as the next digit of the answer. 
Result so far: 61807.9
If we take 4545 away from 4800, we end up with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

On to step 10:
If we divide 2550 by 505, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 61807.95
If we take 2525 away from 2550, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 11:
The number 505 fits into 250 0 times, leaving a remainder of 250.
Record the quotient 0 as the next digit in the result. 
Result so far: 61807.95
If we subtract 0 from 250, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

On to step 12:
When dividing 2500 by 505, we get 4 with a remainder of 480.
Write down 4 as next digit of the result. 
Result so far: 61807.9504
If we take 2020 away from 2500, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 13:
When dividing 4800 by 505, we get 9 with a remainder of 255.
Write down 9 as next digit of the result. 
Result so far: 61807.95049
The remainder is 255 after subtracting 4545 from 4800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Let's proceed to step 14:
2550 divided by 505 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 61807.950495
Deduct 2525 from 2550 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 15:
505 goes into 250 0 times with a remainder of 250.
The next digit of our result is 0. 
Result so far: 61807.950495
Subtract 0 from 250 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Step 16:
If we divide 2500 by 505, we get 4 and a remainder of 480.
The number 4 becomes the next digit in our result. 
Result so far: 61807.95049504
The remainder is 480 after subtracting 2020 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Our division results in 61807.95049504 with a remaining 4.8e-07.