30815307 ÷ 120 
Let's see how many times 120 fits into 30815307.

Going ahead to step 1:
The number 120 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 120

Moving on to step 2:
When dividing 30 by 120, we get 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Append the next digit (8) from the dividend to 30 and continue with: 308 / 120

On to step 3:
The number 120 fits into 308 2 times, leaving a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 240 from 308, we get 68.
Bring next digit (1) of the dividend behind the 68 and repeat the process: 681 / 120

Moving on to step 4:
120 goes into 681 5 times with a remainder of 81.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
The remainder is 81 after subtracting 600 from 681.
Grab the next digit (5) from the dividend, add it to 81, then carry on: 815 / 120

Advancing to step 5:
The number 120 fits into 815 6 times, leaving a remainder of 95.
Use 6 as the next digit of our solution. 
Result so far: 256.0
Subtract 720 from 815 to get 95.
Append the next digit (3) from the dividend to 95 and continue with: 953 / 120

Advancing to step 6:
953 divided by 120 is 7 with a remainder of 113.
Put 7 as the next digit of the answer. 
Result so far: 2567.0
The remainder is 113 after subtracting 840 from 953.
Bring next digit (0) of the dividend behind the 113 and repeat the process: 1130 / 120

Advancing to step 7:
The number 120 fits into 1130 9 times, leaving a remainder of 50.
The number 9 becomes the next digit in our result. 
Result so far: 25679.0
If we take 1080 away from 1130, we end up with 50.
Fetch the next digit (7) from the dividend, attach it to 50 and continue: 507 / 120

Advancing to step 8:
120 goes into 507 4 times with a remainder of 27.
Put 4 as the next digit of the answer. 
Result so far: 256794.0
The remainder is 27 after subtracting 480 from 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 9:
When dividing 270 by 120, we get 2 with a remainder of 30.
The next digit of our result is 2. 
Result so far: 256794.2
Subtracting 240 from 270 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 10:
120 goes into 300 2 times with a remainder of 60.
The number 2 becomes the next digit in our result. 
Result so far: 256794.22
Deduct 240 from 300 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

In conclusion, the division gives 256794.22 with a balance of 0.06.