We divide 350921 by 30
We want to divide 350921 by 30.

On to step 1:
The number 30 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 30

Let's proceed to step 2:
30 goes into 35 1 times with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 5 after subtracting 30 from 35.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 30

Advancing to step 3:
30 can be fit into 50 1 times, resulting in a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we take 30 away from 50, we end up with 20.
Take the next digit (9) from the dividend and append it to 20, then repeat: 209 / 30

Advancing to step 4:
209 divided by 30 is 6 with a remainder of 29.
Write down 6 as next digit of the result. 
Result so far: 116.0
Deduct 180 from 209 and we're left with 29.
Append the next digit (2) from the dividend to 29 and continue with: 292 / 30

Going ahead to step 5:
30 can be fit into 292 9 times, resulting in a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 1169.0
Subtracting 270 from 292 leaves us with 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 30

On to step 6:
If we divide 221 by 30, we get 7 and a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 11697.0
The remainder is 11 after subtracting 210 from 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 7:
30 can be fit into 110 3 times, resulting in a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 11697.3
Subtracting 90 from 110 leaves us 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.

Moving on to step 8:
When dividing 200 by 30, we get 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 11697.36
If we subtract 180 from 200, we get 20.
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:
200 divided by 30 is 6 with a remainder of 20.
The next digit of our result is 6. 
Result so far: 11697.366
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.

The final outcome is 11697.366, with a leftover of 0.002.