We look at the division of 75315015 by 800 
We want to figure out the number of times 75315015 can be divided by 800.

On to step 1:
800 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 800

Let's proceed to step 2:
800 goes into 75 0 times with a remainder of 75.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Append the next digit (3) from the dividend to 75 and continue with: 753 / 800

Moving on to step 3:
If we divide 753 by 800, we get 0 and a remainder of 753.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 753 leaves us with 753.
Bring next digit (1) of the dividend behind the 753 and repeat the process: 7531 / 800

Let's proceed to step 4:
7531 divided by 800 is 9 with a remainder of 331.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 7200 from 7531, we get 331.
Fetch the next digit (5) from the dividend, attach it to 331 and continue: 3315 / 800

Going ahead to step 5:
800 can be fit into 3315 4 times, resulting in a remainder of 115.
Write down 4 as next digit of the result. 
Result so far: 94.0
The remainder is 115 after subtracting 3200 from 3315.
Append the next digit (0) from the dividend to 115 and continue with: 1150 / 800

Let's proceed to step 6:
If we divide 1150 by 800, we get 1 and a remainder of 350.
Write down 1 as next digit of the result. 
Result so far: 941.0
Subtract 800 from 1150 to get 350.
Fetch the next digit (1) from the dividend, attach it to 350 and continue: 3501 / 800

Advancing to step 7:
If we divide 3501 by 800, we get 4 and a remainder of 301.
Use 4 as the next digit of our solution. 
Result so far: 9414.0
If we subtract 3200 from 3501, we get 301.
Fetch the next digit (5) from the dividend, attach it to 301 and continue: 3015 / 800

Advancing to step 8:
If we divide 3015 by 800, we get 3 and a remainder of 615.
The number 3 becomes the next digit in our result. 
Result so far: 94143.0
Subtract 2400 from 3015 to get 615.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6150, and continue the process.

Step 9:
If we divide 6150 by 800, we get 7 and a remainder of 550.
The number 7 becomes the next digit in our result. 
Result so far: 94143.7
If we subtract 5600 from 6150, we get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Moving on to step 10:
When dividing 5500 by 800, we get 6 with a remainder of 700.
Put 6 as the next digit of the answer. 
Result so far: 94143.76
If we take 4800 away from 5500, we end up with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Advancing to step 11:
7000 divided by 800 is 8 with a remainder of 600.
Record the quotient 8 as the next digit in the result. 
Result so far: 94143.768
Deduct 6400 from 7000 and we're left with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Let's proceed to step 12:
The number 800 fits into 6000 7 times, leaving a remainder of 400.
Use 7 as the next digit of our solution. 
Result so far: 94143.7687
Subtract 5600 from 6000 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 13:
When dividing 4000 by 800, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 94143.76875
Deduct 4000 from 4000 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.

Let's proceed to step 14:
If we divide 0 by 800, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 94143.76875
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.

Step 15:
800 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 94143.76875
If we take 0 away from 0, we end up 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.

After the division, we end up with 94143.76875 and a remainder of 0.0.