We look at the division of 251121 by 30 
We want to figure out the number of times 251121 can be divided by 30.

Going ahead to step 1:
30 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 30

Moving on to step 2:
30 can be fit into 25 0 times, resulting in a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 25 to get 25.
Bring next digit (1) of the dividend behind the 25 and repeat the process: 251 / 30

Moving on to step 3:
30 can be fit into 251 8 times, resulting in a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we subtract 240 from 251, we get 11.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 30

Let's proceed to step 4:
The number 30 fits into 111 3 times, leaving a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
The remainder is 21 after subtracting 90 from 111.
Append the next digit (2) from the dividend to 21 and continue with: 212 / 30

Moving on to step 5:
212 divided by 30 is 7 with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 837.0
Subtract 210 from 212 to get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 30

Let's proceed to step 6:
30 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 8370.0
The remainder is 21 after subtracting 0 from 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 7:
210 divided by 30 is 7 with a remainder of 0.
The next digit of our result is 7. 
Result so far: 8370.7
Subtract 210 from 210 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 8370.7
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
When dividing 0 by 30, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 8370.7
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 8370.7 and a remainder of 0.0.