210423 ÷ 43 
We're looking to find how many times 43 goes into 210423.

Going ahead to step 1:
The number 43 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 43

Let's proceed to step 2:
If we divide 21 by 43, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Include the next digit (0) from the dividend after 21, then repeat: 210 / 43

Going ahead to step 3:
43 goes into 210 4 times with a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 38 after subtracting 172 from 210.
Take the next digit (4) from the dividend and append it to 38, then repeat: 384 / 43

On to step 4:
384 divided by 43 is 8 with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 48.0
If we take 344 away from 384, we end up with 40.
Fetch the next digit (2) from the dividend, attach it to 40 and continue: 402 / 43

Going ahead to step 5:
When dividing 402 by 43, we get 9 with a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 489.0
Deduct 387 from 402 and we're left with 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 43

Moving on to step 6:
43 can be fit into 153 3 times, resulting in a remainder of 24.
The number 3 becomes the next digit in our result. 
Result so far: 4893.0
The remainder is 24 after subtracting 129 from 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 7:
If we divide 240 by 43, we get 5 and a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 4893.5
Subtract 215 from 240 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 8:
43 goes into 250 5 times with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 4893.55
Subtract 215 from 250 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 4893.55 and a remainder of 0.035.