We divide 421430 by 72
We want to divide 421430 by 72.

On to step 1:
4 divided by 72 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 72

Going ahead to step 2:
72 can be fit into 42 0 times, resulting in a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 72

Moving on to step 3:
72 goes into 421 5 times with a remainder of 61.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 61 after subtracting 360 from 421.
Take the next digit (4) from the dividend and append it to 61, then repeat: 614 / 72

Moving on to step 4:
If we divide 614 by 72, we get 8 and a remainder of 38.
The number 8 becomes the next digit in our result. 
Result so far: 58.0
Subtracting 576 from 614 leaves us with 38.
Bring next digit (3) of the dividend behind the 38 and repeat the process: 383 / 72

Going ahead to step 5:
383 divided by 72 is 5 with a remainder of 23.
Use 5 as the next digit of our solution. 
Result so far: 585.0
If we subtract 360 from 383, we get 23.
Grab the next digit (0) from the dividend, add it to 23, then carry on: 230 / 72

Going ahead to step 6:
The number 72 fits into 230 3 times, leaving a remainder of 14.
The next digit of our result is 3. 
Result so far: 5853.0
Deduct 216 from 230 and we're left 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.

Advancing to step 7:
If we divide 140 by 72, we get 1 and a remainder of 68.
Put 1 as the next digit of the answer. 
Result so far: 5853.1
If we subtract 72 from 140, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 8:
72 can be fit into 680 9 times, resulting in a remainder of 32.
Use 9 as the next digit of our solution. 
Result so far: 5853.19
If we take 648 away from 680, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 9:
320 divided by 72 is 4 with a remainder of 32.
Use 4 as the next digit of our solution. 
Result so far: 5853.194
Subtract 288 from 320 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 10:
320 divided by 72 is 4 with a remainder of 32.
The next digit of our result is 4. 
Result so far: 5853.1944
The remainder is 32 after subtracting 288 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 5853.1944 with a balance of 0.00032.