Let's divide 819191 by 30
We want to figure out the number of times 819191 can be divided by 30.

Going ahead to step 1:
8 divided by 30 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 30

Going ahead to step 2:
30 goes into 81 2 times with a remainder of 21.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 60 from 81 leaves us with 21.
Fetch the next digit (9) from the dividend, attach it to 21 and continue: 219 / 30

Let's proceed to step 3:
219 divided by 30 is 7 with a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 27.0
The remainder is 9 after subtracting 210 from 219.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 30

Moving on to step 4:
91 divided by 30 is 3 with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 273.0
The remainder is 1 after subtracting 90 from 91.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 30

Moving on to step 5:
19 divided by 30 is 0 with a remainder of 19.
The next digit of our result is 0. 
Result so far: 2730.0
The remainder is 19 after subtracting 0 from 19.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 30

Going ahead to step 6:
If we divide 191 by 30, we get 6 and a remainder of 11.
Use 6 as the next digit of our solution. 
Result so far: 27306.0
Subtract 180 from 191 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 7:
If we divide 110 by 30, we get 3 and a remainder of 20.
Put 3 as the next digit of the answer. 
Result so far: 27306.3
Deduct 90 from 110 and we're left 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.

Let's proceed to step 8:
The number 30 fits into 200 6 times, leaving a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 27306.36
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
If we divide 200 by 30, we get 6 and a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 27306.366
Deduct 180 from 200 and we're left 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.

After the division, we end up with 27306.366 and a remainder of 0.002.