We divide 851911 by 30
We want to figure out the number of times 851911 can be divided by 30.

Let's proceed to step 1:
8 divided by 30 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 30

Advancing to step 2:
30 goes into 85 2 times with a remainder of 25.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 60 from 85 and we're left with 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 30

Let's proceed to step 3:
30 goes into 251 8 times with a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 28.0
If we subtract 240 from 251, we get 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 30

Let's proceed to step 4:
The number 30 fits into 119 3 times, leaving a remainder of 29.
Put 3 as the next digit of the answer. 
Result so far: 283.0
The remainder is 29 after subtracting 90 from 119.
Append the next digit (1) from the dividend to 29 and continue with: 291 / 30

Advancing to step 5:
30 goes into 291 9 times with a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 2839.0
Subtracting 270 from 291 leaves us with 21.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 30

Moving on to step 6:
30 goes into 211 7 times with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 28397.0
Subtract 210 from 211 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
10 divided by 30 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 28397.0
Subtracting 0 from 10 leaves us 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.

Advancing to step 8:
100 divided by 30 is 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 28397.03
If we take 90 away from 100, we end up 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.

Moving on to step 9:
30 goes into 100 3 times with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 28397.033
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 28397.033 and a remainder of 0.001.