We divide 16143031 by 3
Let's see how many times 3 fits into 16143031.

Advancing to step 1:
The number 3 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 3

Moving on to step 2:
The number 3 fits into 16 5 times, leaving a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 1 after subtracting 15 from 16.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 3

Moving on to step 3:
11 divided by 3 is 3 with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 53.0
Subtract 9 from 11 to get 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 3

Advancing to step 4:
24 divided by 3 is 8 with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 538.0
If we subtract 24 from 24, we get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 3

Step 5:
The number 3 fits into 3 1 times, leaving a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 5381.0
Subtracting 3 from 3 leaves us with 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 3

Let's proceed to step 6:
The number 3 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 53810.0
Deduct 0 from 0 and we're left with 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 3

Let's proceed to step 7:
The number 3 fits into 3 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 538101.0
Subtracting 3 from 3 leaves us with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 3

Moving on to step 8:
When dividing 1 by 3, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 5381010.0
If we take 0 away from 1, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
If we divide 10 by 3, we get 3 and a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 5381010.3
If we take 9 away from 10, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 10:
If we divide 10 by 3, we get 3 and a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 5381010.33
If we take 9 away from 10, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 5381010.33, with a leftover of 0.001.