We look at the division of 3999258 by 143 
Our goal is to divide 3999258 by 143.

Going ahead to step 1:
3 divided by 143 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 143

Step 2:
143 goes into 39 0 times with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 143

On to step 3:
143 can be fit into 399 2 times, resulting in a remainder of 113.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 286 from 399 to get 113.
Include the next digit (9) from the dividend after 113, then repeat: 1139 / 143

Moving on to step 4:
The number 143 fits into 1139 7 times, leaving a remainder of 138.
Put 7 as the next digit of the answer. 
Result so far: 27.0
If we take 1001 away from 1139, we end up with 138.
Append the next digit (2) from the dividend to 138 and continue with: 1382 / 143

Advancing to step 5:
The number 143 fits into 1382 9 times, leaving a remainder of 95.
Put 9 as the next digit of the answer. 
Result so far: 279.0
Deduct 1287 from 1382 and we're left with 95.
Include the next digit (5) from the dividend after 95, then repeat: 955 / 143

Let's proceed to step 6:
The number 143 fits into 955 6 times, leaving a remainder of 97.
Record the quotient 6 as the next digit in the result. 
Result so far: 2796.0
Subtracting 858 from 955 leaves us with 97.
Include the next digit (8) from the dividend after 97, then repeat: 978 / 143

Step 7:
143 can be fit into 978 6 times, resulting in a remainder of 120.
Put 6 as the next digit of the answer. 
Result so far: 27966.0
Subtract 858 from 978 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 8:
143 can be fit into 1200 8 times, resulting in a remainder of 56.
The next digit of our result is 8. 
Result so far: 27966.8
Deduct 1144 from 1200 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 9:
When dividing 560 by 143, we get 3 with a remainder of 131.
Put 3 as the next digit of the answer. 
Result so far: 27966.83
Deduct 429 from 560 and we're left with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Let's proceed to step 10:
If we divide 1310 by 143, we get 9 and a remainder of 23.
Put 9 as the next digit of the answer. 
Result so far: 27966.839
Subtract 1287 from 1310 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 11:
143 goes into 230 1 times with a remainder of 87.
The number 1 becomes the next digit in our result. 
Result so far: 27966.8391
Subtracting 143 from 230 leaves us with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

On to step 12:
143 goes into 870 6 times with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 27966.83916
The remainder is 12 after subtracting 858 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 13:
If we divide 120 by 143, we get 0 and a remainder of 120.
The next digit of our result is 0. 
Result so far: 27966.83916
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 14:
143 can be fit into 1200 8 times, resulting in a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 27966.8391608
If we subtract 1144 from 1200, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 15:
When dividing 560 by 143, we get 3 with a remainder of 131.
The number 3 becomes the next digit in our result. 
Result so far: 27966.83916083
If we subtract 429 from 560, we get 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

After the division, we end up with 27966.83916083 and a remainder of 1.31e-07.