Let's divide 171123 by 43
Our goal is to divide 171123 by 43.

On to step 1:
When dividing 1 by 43, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 43

On to step 2:
When dividing 17 by 43, we get 0 with a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 43

Moving on to step 3:
43 can be fit into 171 3 times, resulting in a remainder of 42.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 129 from 171 and we're left with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 43

Let's proceed to step 4:
43 goes into 421 9 times with a remainder of 34.
Write down 9 as next digit of the result. 
Result so far: 39.0
If we take 387 away from 421, we end up with 34.
Grab the next digit (2) from the dividend, add it to 34, then carry on: 342 / 43

Advancing to step 5:
The number 43 fits into 342 7 times, leaving a remainder of 41.
The number 7 becomes the next digit in our result. 
Result so far: 397.0
If we subtract 301 from 342, we get 41.
Append the next digit (3) from the dividend to 41 and continue with: 413 / 43

Going ahead to step 6:
413 divided by 43 is 9 with a remainder of 26.
Write down 9 as next digit of the result. 
Result so far: 3979.0
If we subtract 387 from 413, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 7:
When dividing 260 by 43, we get 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 3979.6
Deduct 258 from 260 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
The number 43 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 3979.6
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
If we divide 200 by 43, we get 4 and a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 3979.604
If we subtract 172 from 200, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 10:
43 goes into 280 6 times with a remainder of 22.
The next digit of our result is 6. 
Result so far: 3979.6046
Subtract 258 from 280 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 11:
43 goes into 220 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 3979.60465
Subtract 215 from 220 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 12:
50 divided by 43 is 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 3979.604651
Subtracting 43 from 50 leaves us 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.

On to step 13:
If we divide 70 by 43, we get 1 and a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 3979.6046511
Deduct 43 from 70 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final result is 3979.6046511 with a remainder of 2.7e-07.