We're dividing 90504 by 86 
We're looking to find how many times 86 goes into 90504.

Advancing to step 1:
The number 86 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 86

Moving on to step 2:
If we divide 90 by 86, we get 1 and a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 4 after subtracting 86 from 90.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 86

On to step 3:
If we divide 45 by 86, we get 0 and a remainder of 45.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtracting 0 from 45 leaves us with 45.
Fetch the next digit (0) from the dividend, attach it to 45 and continue: 450 / 86

On to step 4:
86 goes into 450 5 times with a remainder of 20.
The next digit of our result is 5. 
Result so far: 105.0
If we take 430 away from 450, we end up with 20.
Include the next digit (4) from the dividend after 20, then repeat: 204 / 86

Going ahead to step 5:
The number 86 fits into 204 2 times, leaving a remainder of 32.
The next digit of our result is 2. 
Result so far: 1052.0
If we subtract 172 from 204, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 6:
The number 86 fits into 320 3 times, leaving a remainder of 62.
Put 3 as the next digit of the answer. 
Result so far: 1052.3
The remainder is 62 after subtracting 258 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 7:
When dividing 620 by 86, we get 7 with a remainder of 18.
The next digit of our result is 7. 
Result so far: 1052.37
If we take 602 away from 620, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 8:
If we divide 180 by 86, we get 2 and a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 1052.372
If we take 172 away from 180, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
80 divided by 86 is 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 1052.372
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 10:
800 divided by 86 is 9 with a remainder of 26.
Put 9 as the next digit of the answer. 
Result so far: 1052.37209
Subtract 774 from 800 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 11:
86 can be fit into 260 3 times, resulting in a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 1052.372093
The remainder is 2 after subtracting 258 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 12:
If we divide 20 by 86, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 1052.372093
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 13:
If we divide 200 by 86, we get 2 and a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 1052.37209302
The remainder is 28 after subtracting 172 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 1052.37209302, with a leftover of 2.8e-08.