53030303 ÷ 75 
We want to divide 53030303 by 75.

On to step 1:
75 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 75

Advancing to step 2:
The number 75 fits into 53 0 times, leaving a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Take the next digit (0) from the dividend and append it to 53, then repeat: 530 / 75

Going ahead to step 3:
75 goes into 530 7 times with a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
The remainder is 5 after subtracting 525 from 530.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 75

On to step 4:
When dividing 53 by 75, we get 0 with a remainder of 53.
The next digit of our result is 0. 
Result so far: 70.0
If we subtract 0 from 53, we get 53.
Take the next digit (0) from the dividend and append it to 53, then repeat: 530 / 75

Step 5:
When dividing 530 by 75, we get 7 with a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 707.0
Deduct 525 from 530 and we're left with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 75

Moving on to step 6:
53 divided by 75 is 0 with a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 7070.0
Subtract 0 from 53 to get 53.
Grab the next digit (0) from the dividend, add it to 53, then carry on: 530 / 75

On to step 7:
If we divide 530 by 75, we get 7 and a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 70707.0
Subtracting 525 from 530 leaves us with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 75

Advancing to step 8:
If we divide 53 by 75, we get 0 and a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 707070.0
If we take 0 away from 53, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 9:
530 divided by 75 is 7 with a remainder of 5.
The next digit of our result is 7. 
Result so far: 707070.7
If we subtract 525 from 530, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 10:
When dividing 50 by 75, we get 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 707070.7
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 11:
If we divide 500 by 75, we get 6 and a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 707070.706
Deduct 450 from 500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 12:
The number 75 fits into 500 6 times, leaving a remainder of 50.
The next digit of our result is 6. 
Result so far: 707070.7066
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 707070.7066, with a leftover of 0.0005.