We look at the division of 3390251 by 143 
We're looking to find how many times 143 goes into 3390251.

Step 1:
The number 143 fits into 3 0 times, leaving 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.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 143

Step 2:
When dividing 33 by 143, we get 0 with a remainder of 33.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 33 to get 33.
Append the next digit (9) from the dividend to 33 and continue with: 339 / 143

Moving on to step 3:
When dividing 339 by 143, we get 2 with a remainder of 53.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 286 from 339 to get 53.
Bring next digit (0) of the dividend behind the 53 and repeat the process: 530 / 143

Moving on to step 4:
When dividing 530 by 143, we get 3 with a remainder of 101.
The next digit of our result is 3. 
Result so far: 23.0
Subtract 429 from 530 to get 101.
Bring next digit (2) of the dividend behind the 101 and repeat the process: 1012 / 143

On to step 5:
1012 divided by 143 is 7 with a remainder of 11.
The number 7 becomes the next digit in our result. 
Result so far: 237.0
Subtracting 1001 from 1012 leaves us with 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 143

On to step 6:
If we divide 115 by 143, we get 0 and a remainder of 115.
The next digit of our result is 0. 
Result so far: 2370.0
Subtract 0 from 115 to get 115.
Include the next digit (1) from the dividend after 115, then repeat: 1151 / 143

Moving on to step 7:
1151 divided by 143 is 8 with a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 23708.0
If we take 1144 away from 1151, we end up 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 8:
70 divided by 143 is 0 with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 23708.0
The remainder is 70 after subtracting 0 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 9:
If we divide 700 by 143, we get 4 and a remainder of 128.
Write down 4 as next digit of the result. 
Result so far: 23708.04
The remainder is 128 after subtracting 572 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Going ahead to step 10:
The number 143 fits into 1280 8 times, leaving a remainder of 136.
Use 8 as the next digit of our solution. 
Result so far: 23708.048
Subtracting 1144 from 1280 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Let's proceed to step 11:
143 can be fit into 1360 9 times, resulting in a remainder of 73.
The number 9 becomes the next digit in our result. 
Result so far: 23708.0489
The remainder is 73 after subtracting 1287 from 1360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Advancing to step 12:
143 goes into 730 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 23708.04895
If we take 715 away from 730, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 13:
150 divided by 143 is 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 23708.048951
If we subtract 143 from 150, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 14:
When dividing 70 by 143, we get 0 with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 23708.048951
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 15:
When dividing 700 by 143, we get 4 with a remainder of 128.
Put 4 as the next digit of the answer. 
Result so far: 23708.04895104
Subtract 572 from 700 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

The final outcome is 23708.04895104, with a leftover of 1.28e-07.