Let's divide 88131309 by 804
We're looking to find how many times 804 goes into 88131309.

Step 1:
804 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 804

On to step 2:
804 goes into 88 0 times with a remainder of 88.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 88 and we're left with 88.
Grab the next digit (1) from the dividend, add it to 88, then carry on: 881 / 804

Moving on to step 3:
881 divided by 804 is 1 with a remainder of 77.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 804 from 881 to get 77.
Grab the next digit (3) from the dividend, add it to 77, then carry on: 773 / 804

Let's proceed to step 4:
773 divided by 804 is 0 with a remainder of 773.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
The remainder is 773 after subtracting 0 from 773.
Take the next digit (1) from the dividend and append it to 773, then repeat: 7731 / 804

Step 5:
If we divide 7731 by 804, we get 9 and a remainder of 495.
Put 9 as the next digit of the answer. 
Result so far: 109.0
Deduct 7236 from 7731 and we're left with 495.
Bring next digit (3) of the dividend behind the 495 and repeat the process: 4953 / 804

Step 6:
4953 divided by 804 is 6 with a remainder of 129.
Use 6 as the next digit of our solution. 
Result so far: 1096.0
Deduct 4824 from 4953 and we're left with 129.
Append the next digit (0) from the dividend to 129 and continue with: 1290 / 804

Moving on to step 7:
804 can be fit into 1290 1 times, resulting in a remainder of 486.
Write down 1 as next digit of the result. 
Result so far: 10961.0
If we take 804 away from 1290, we end up with 486.
Take the next digit (9) from the dividend and append it to 486, then repeat: 4869 / 804

Moving on to step 8:
4869 divided by 804 is 6 with a remainder of 45.
Record the quotient 6 as the next digit in the result. 
Result so far: 109616.0
If we take 4824 away from 4869, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 9:
804 can be fit into 450 0 times, resulting in a remainder of 450.
Put 0 as the next digit of the answer. 
Result so far: 109616.0
Subtract 0 from 450 to get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Step 10:
If we divide 4500 by 804, we get 5 and a remainder of 480.
Use 5 as the next digit of our solution. 
Result so far: 109616.05
Deduct 4020 from 4500 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Moving on to step 11:
804 goes into 4800 5 times with a remainder of 780.
Put 5 as the next digit of the answer. 
Result so far: 109616.055
Subtracting 4020 from 4800 leaves us with 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Our division results in 109616.055 with a remaining 0.078.