990142 ÷ 43 
Our goal is to divide 990142 by 43.

On to step 1:
43 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 43

Advancing to step 2:
If we divide 99 by 43, we get 2 and a remainder of 13.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 13 after subtracting 86 from 99.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 43

Moving on to step 3:
If we divide 130 by 43, we get 3 and a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 23.0
If we subtract 129 from 130, we get 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 43

Going ahead to step 4:
If we divide 11 by 43, we get 0 and a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 230.0
Subtracting 0 from 11 leaves us with 11.
Include the next digit (4) from the dividend after 11, then repeat: 114 / 43

Advancing to step 5:
43 can be fit into 114 2 times, resulting in a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 2302.0
If we take 86 away from 114, we end up with 28.
Bring next digit (2) of the dividend behind the 28 and repeat the process: 282 / 43

Step 6:
43 can be fit into 282 6 times, resulting in a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 23026.0
Deduct 258 from 282 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
If we divide 240 by 43, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 23026.5
If we take 215 away from 240, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 8:
The number 43 fits into 250 5 times, leaving a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 23026.55
The remainder is 35 after subtracting 215 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 23026.55, with a leftover of 0.035.