31464339 ÷ 809 
We want to divide 31464339 by 809.

Advancing to step 1:
If we divide 3 by 809, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 809

Step 2:
809 goes into 31 0 times with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 31 and we're left with 31.
Take the next digit (4) from the dividend and append it to 31, then repeat: 314 / 809

On to step 3:
314 divided by 809 is 0 with a remainder of 314.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 314 and we're left with 314.
Append the next digit (6) from the dividend to 314 and continue with: 3146 / 809

Advancing to step 4:
809 can be fit into 3146 3 times, resulting in a remainder of 719.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 719 after subtracting 2427 from 3146.
Take the next digit (4) from the dividend and append it to 719, then repeat: 7194 / 809

Step 5:
809 can be fit into 7194 8 times, resulting in a remainder of 722.
Put 8 as the next digit of the answer. 
Result so far: 38.0
If we subtract 6472 from 7194, we get 722.
Append the next digit (3) from the dividend to 722 and continue with: 7223 / 809

Step 6:
809 can be fit into 7223 8 times, resulting in a remainder of 751.
Write down 8 as next digit of the result. 
Result so far: 388.0
If we subtract 6472 from 7223, we get 751.
Append the next digit (3) from the dividend to 751 and continue with: 7513 / 809

On to step 7:
If we divide 7513 by 809, we get 9 and a remainder of 232.
The number 9 becomes the next digit in our result. 
Result so far: 3889.0
Deduct 7281 from 7513 and we're left with 232.
Fetch the next digit (9) from the dividend, attach it to 232 and continue: 2329 / 809

Moving on to step 8:
809 goes into 2329 2 times with a remainder of 711.
Record the quotient 2 as the next digit in the result. 
Result so far: 38892.0
If we take 1618 away from 2329, we end up with 711.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7110, and continue the process.

On to step 9:
The number 809 fits into 7110 8 times, leaving a remainder of 638.
Record the quotient 8 as the next digit in the result. 
Result so far: 38892.8
If we take 6472 away from 7110, we end up with 638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6380, and continue the process.

Let's proceed to step 10:
When dividing 6380 by 809, we get 7 with a remainder of 717.
The next digit of our result is 7. 
Result so far: 38892.87
If we take 5663 away from 6380, we end up with 717.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7170, and continue the process.

Step 11:
If we divide 7170 by 809, we get 8 and a remainder of 698.
Use 8 as the next digit of our solution. 
Result so far: 38892.878
If we subtract 6472 from 7170, we get 698.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6980, and continue the process.

Going ahead to step 12:
809 can be fit into 6980 8 times, resulting in a remainder of 508.
The next digit of our result is 8. 
Result so far: 38892.8788
If we take 6472 away from 6980, we end up with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

The final result is 38892.8788 with a remainder of 0.00508.