We're dividing 53999520 by 30 
Let's see how many times 30 fits into 53999520.

Step 1:
The number 30 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 30

Advancing to step 2:
The number 30 fits into 53 1 times, leaving a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 30 from 53 and we're left with 23.
Bring next digit (9) of the dividend behind the 23 and repeat the process: 239 / 30

Moving on to step 3:
The number 30 fits into 239 7 times, leaving a remainder of 29.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 29 after subtracting 210 from 239.
Append the next digit (9) from the dividend to 29 and continue with: 299 / 30

Step 4:
When dividing 299 by 30, we get 9 with a remainder of 29.
Record the quotient 9 as the next digit in the result. 
Result so far: 179.0
Subtracting 270 from 299 leaves us with 29.
Append the next digit (9) from the dividend to 29 and continue with: 299 / 30

Advancing to step 5:
30 can be fit into 299 9 times, resulting in a remainder of 29.
Write down 9 as next digit of the result. 
Result so far: 1799.0
Subtracting 270 from 299 leaves us with 29.
Fetch the next digit (5) from the dividend, attach it to 29 and continue: 295 / 30

On to step 6:
When dividing 295 by 30, we get 9 with a remainder of 25.
Put 9 as the next digit of the answer. 
Result so far: 17999.0
If we take 270 away from 295, we end up with 25.
Take the next digit (2) from the dividend and append it to 25, then repeat: 252 / 30

Step 7:
When dividing 252 by 30, we get 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 179998.0
The remainder is 12 after subtracting 240 from 252.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 30

Moving on to step 8:
When dividing 120 by 30, we get 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 1799984.0
The remainder is 0 after subtracting 120 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1799984.0
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.

Going ahead to step 10:
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: 1799984.0
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.

The final result is 1799984.0 with a remainder of 0.0.