143973 ÷ 43 
Our goal is to divide 143973 by 43.

Advancing to step 1:
The number 43 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 43

Going ahead to step 2:
43 goes into 14 0 times with a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Bring next digit (3) of the dividend behind the 14 and repeat the process: 143 / 43

Moving on to step 3:
When dividing 143 by 43, we get 3 with a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 129 from 143 to get 14.
Include the next digit (9) from the dividend after 14, then repeat: 149 / 43

Moving on to step 4:
If we divide 149 by 43, we get 3 and a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 33.0
If we take 129 away from 149, we end up with 20.
Append the next digit (7) from the dividend to 20 and continue with: 207 / 43

Advancing to step 5:
The number 43 fits into 207 4 times, leaving a remainder of 35.
Record the quotient 4 as the next digit in the result. 
Result so far: 334.0
Subtract 172 from 207 to get 35.
Include the next digit (3) from the dividend after 35, then repeat: 353 / 43

Let's proceed to step 6:
353 divided by 43 is 8 with a remainder of 9.
The next digit of our result is 8. 
Result so far: 3348.0
The remainder is 9 after subtracting 344 from 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
When dividing 90 by 43, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 3348.2
Deduct 86 from 90 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
40 divided by 43 is 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 3348.2
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
The number 43 fits into 400 9 times, leaving a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 3348.209
Deduct 387 from 400 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 10:
When dividing 130 by 43, we get 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 3348.2093
Subtract 129 from 130 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 11:
43 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 3348.2093
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 12:
When dividing 100 by 43, we get 2 with a remainder of 14.
The next digit of our result is 2. 
Result so far: 3348.209302
Subtracting 86 from 100 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 13:
When dividing 140 by 43, we get 3 with a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 3348.2093023
The remainder is 11 after subtracting 129 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 14:
43 goes into 110 2 times with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 3348.20930232
The remainder is 24 after subtracting 86 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 3348.20930232 with a remainder of 2.4e-08.