We're dividing 223591 by 87 
We're looking to find how many times 87 goes into 223591.

On to step 1:
87 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 87

Step 2:
22 divided by 87 is 0 with a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 22 leaves us with 22.
Take the next digit (3) from the dividend and append it to 22, then repeat: 223 / 87

Step 3:
223 divided by 87 is 2 with a remainder of 49.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 49 after subtracting 174 from 223.
Take the next digit (5) from the dividend and append it to 49, then repeat: 495 / 87

Moving on to step 4:
If we divide 495 by 87, we get 5 and a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtract 435 from 495 to get 60.
Include the next digit (9) from the dividend after 60, then repeat: 609 / 87

Going ahead to step 5:
The number 87 fits into 609 7 times, leaving a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 257.0
Subtracting 609 from 609 leaves us with 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 87

Going ahead to step 6:
When dividing 1 by 87, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 2570.0
Subtracting 0 from 1 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
10 divided by 87 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 2570.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
87 can be fit into 100 1 times, resulting in a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 2570.01
Subtracting 87 from 100 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 9:
87 can be fit into 130 1 times, resulting in a remainder of 43.
Put 1 as the next digit of the answer. 
Result so far: 2570.011
Subtract 87 from 130 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

The final result is 2570.011 with a remainder of 0.0043.