Let's divide 75180303 by 999
Let's see how many times 999 fits into 75180303.

Going ahead to step 1:
7 divided by 999 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 999

Let's proceed to step 2:
When dividing 75 by 999, we get 0 with a remainder of 75.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 75, we end up with 75.
Take the next digit (1) from the dividend and append it to 75, then repeat: 751 / 999

Moving on to step 3:
751 divided by 999 is 0 with a remainder of 751.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 751, we get 751.
Take the next digit (8) from the dividend and append it to 751, then repeat: 7518 / 999

Advancing to step 4:
999 goes into 7518 7 times with a remainder of 525.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 6993 from 7518 to get 525.
Grab the next digit (0) from the dividend, add it to 525, then carry on: 5250 / 999

Moving on to step 5:
999 can be fit into 5250 5 times, resulting in a remainder of 255.
Put 5 as the next digit of the answer. 
Result so far: 75.0
Subtracting 4995 from 5250 leaves us with 255.
Bring next digit (3) of the dividend behind the 255 and repeat the process: 2553 / 999

Let's proceed to step 6:
When dividing 2553 by 999, we get 2 with a remainder of 555.
Use 2 as the next digit of our solution. 
Result so far: 752.0
Subtract 1998 from 2553 to get 555.
Include the next digit (0) from the dividend after 555, then repeat: 5550 / 999

Going ahead to step 7:
999 goes into 5550 5 times with a remainder of 555.
Record the quotient 5 as the next digit in the result. 
Result so far: 7525.0
If we take 4995 away from 5550, we end up with 555.
Bring next digit (3) of the dividend behind the 555 and repeat the process: 5553 / 999

Going ahead to step 8:
5553 divided by 999 is 5 with a remainder of 558.
Put 5 as the next digit of the answer. 
Result so far: 75255.0
Subtract 4995 from 5553 to get 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Step 9:
If we divide 5580 by 999, we get 5 and a remainder of 585.
Record the quotient 5 as the next digit in the result. 
Result so far: 75255.5
Subtract 4995 from 5580 to get 585.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

Let's proceed to step 10:
The number 999 fits into 5850 5 times, leaving a remainder of 855.
Use 5 as the next digit of our solution. 
Result so far: 75255.55
Deduct 4995 from 5850 and we're left with 855.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8550, and continue the process.

The quotient of the division is 75255.55, and the remainder is 0.855.