We divide 421195 by 30
Our goal is to divide 421195 by 30.

On to step 1:
If we divide 4 by 30, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 30

Step 2:
The number 30 fits into 42 1 times, leaving a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 30 away from 42, we end up with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 30

On to step 3:
The number 30 fits into 121 4 times, leaving a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Subtracting 120 from 121 leaves us with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 30

Going ahead to step 4:
If we divide 11 by 30, we get 0 and a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 140.0
If we subtract 0 from 11, we get 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 30

Moving on to step 5:
If we divide 119 by 30, we get 3 and a remainder of 29.
The next digit of our result is 3. 
Result so far: 1403.0
Deduct 90 from 119 and we're left with 29.
Fetch the next digit (5) from the dividend, attach it to 29 and continue: 295 / 30

Going ahead to step 6:
30 goes into 295 9 times with a remainder of 25.
The next digit of our result is 9. 
Result so far: 14039.0
Deduct 270 from 295 and we're left 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 7:
30 goes into 250 8 times with a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 14039.8
The remainder is 10 after subtracting 240 from 250.
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 8:
When dividing 100 by 30, we get 3 with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 14039.83
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
The number 30 fits into 100 3 times, leaving a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 14039.833
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 14039.833 with a remainder of 0.001.