Let's divide 88390081 by 504
We're looking to find how many times 504 goes into 88390081.

Going ahead to step 1:
If we divide 8 by 504, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 504

On to step 2:
504 can be fit into 88 0 times, resulting in a remainder of 88.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 88, we get 88.
Take the next digit (3) from the dividend and append it to 88, then repeat: 883 / 504

Let's proceed to step 3:
When dividing 883 by 504, we get 1 with a remainder of 379.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 379 after subtracting 504 from 883.
Take the next digit (9) from the dividend and append it to 379, then repeat: 3799 / 504

Advancing to step 4:
504 goes into 3799 7 times with a remainder of 271.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we take 3528 away from 3799, we end up with 271.
Grab the next digit (0) from the dividend, add it to 271, then carry on: 2710 / 504

Step 5:
504 goes into 2710 5 times with a remainder of 190.
Put 5 as the next digit of the answer. 
Result so far: 175.0
If we take 2520 away from 2710, we end up with 190.
Fetch the next digit (0) from the dividend, attach it to 190 and continue: 1900 / 504

Let's proceed to step 6:
When dividing 1900 by 504, we get 3 with a remainder of 388.
The next digit of our result is 3. 
Result so far: 1753.0
Deduct 1512 from 1900 and we're left with 388.
Include the next digit (8) from the dividend after 388, then repeat: 3888 / 504

Moving on to step 7:
If we divide 3888 by 504, we get 7 and a remainder of 360.
Record the quotient 7 as the next digit in the result. 
Result so far: 17537.0
The remainder is 360 after subtracting 3528 from 3888.
Fetch the next digit (1) from the dividend, attach it to 360 and continue: 3601 / 504

Going ahead to step 8:
3601 divided by 504 is 7 with a remainder of 73.
Put 7 as the next digit of the answer. 
Result so far: 175377.0
If we subtract 3528 from 3601, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 9:
If we divide 730 by 504, we get 1 and a remainder of 226.
Put 1 as the next digit of the answer. 
Result so far: 175377.1
If we subtract 504 from 730, we get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Step 10:
If we divide 2260 by 504, we get 4 and a remainder of 244.
Write down 4 as next digit of the result. 
Result so far: 175377.14
Subtracting 2016 from 2260 leaves us with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

On to step 11:
504 can be fit into 2440 4 times, resulting in a remainder of 424.
The number 4 becomes the next digit in our result. 
Result so far: 175377.144
If we subtract 2016 from 2440, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

The final outcome is 175377.144, with a leftover of 0.0424.