8780509 divided by 507 
Let's see how many times 507 fits into 8780509.

On to step 1:
The number 507 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 507

Step 2:
507 goes into 87 0 times with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Append the next digit (8) from the dividend to 87 and continue with: 878 / 507

Advancing to step 3:
507 can be fit into 878 1 times, resulting in a remainder of 371.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 371 after subtracting 507 from 878.
Bring next digit (0) of the dividend behind the 371 and repeat the process: 3710 / 507

Step 4:
When dividing 3710 by 507, we get 7 with a remainder of 161.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 3549 from 3710, we get 161.
Grab the next digit (5) from the dividend, add it to 161, then carry on: 1615 / 507

Advancing to step 5:
507 goes into 1615 3 times with a remainder of 94.
The next digit of our result is 3. 
Result so far: 173.0
If we subtract 1521 from 1615, we get 94.
Take the next digit (0) from the dividend and append it to 94, then repeat: 940 / 507

Going ahead to step 6:
507 can be fit into 940 1 times, resulting in a remainder of 433.
The number 1 becomes the next digit in our result. 
Result so far: 1731.0
If we subtract 507 from 940, we get 433.
Bring next digit (9) of the dividend behind the 433 and repeat the process: 4339 / 507

Step 7:
507 goes into 4339 8 times with a remainder of 283.
Use 8 as the next digit of our solution. 
Result so far: 17318.0
If we take 4056 away from 4339, we end up with 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

On to step 8:
507 can be fit into 2830 5 times, resulting in a remainder of 295.
Use 5 as the next digit of our solution. 
Result so far: 17318.5
The remainder is 295 after subtracting 2535 from 2830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Step 9:
507 goes into 2950 5 times with a remainder of 415.
Put 5 as the next digit of the answer. 
Result so far: 17318.55
If we take 2535 away from 2950, we end up with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

After the division, we end up with 17318.55 and a remainder of 0.415.