8558900 ÷ 685 
We're looking to find how many times 685 goes into 8558900.

Going ahead to step 1:
The number 685 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
Subtract 0 from 8 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 685

Step 2:
685 can be fit into 85 0 times, resulting in a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 85 and we're left with 85.
Bring next digit (5) of the dividend behind the 85 and repeat the process: 855 / 685

Let's proceed to step 3:
If we divide 855 by 685, we get 1 and a remainder of 170.
The next digit of our result is 1. 
Result so far: 1.0
If we take 685 away from 855, we end up with 170.
Grab the next digit (8) from the dividend, add it to 170, then carry on: 1708 / 685

Step 4:
The number 685 fits into 1708 2 times, leaving a remainder of 338.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 338 after subtracting 1370 from 1708.
Fetch the next digit (9) from the dividend, attach it to 338 and continue: 3389 / 685

On to step 5:
685 goes into 3389 4 times with a remainder of 649.
The number 4 becomes the next digit in our result. 
Result so far: 124.0
Deduct 2740 from 3389 and we're left with 649.
Bring next digit (0) of the dividend behind the 649 and repeat the process: 6490 / 685

On to step 6:
The number 685 fits into 6490 9 times, leaving a remainder of 325.
Use 9 as the next digit of our solution. 
Result so far: 1249.0
If we subtract 6165 from 6490, we get 325.
Include the next digit (0) from the dividend after 325, then repeat: 3250 / 685

Moving on to step 7:
685 goes into 3250 4 times with a remainder of 510.
The next digit of our result is 4. 
Result so far: 12494.0
If we take 2740 away from 3250, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Going ahead to step 8:
If we divide 5100 by 685, we get 7 and a remainder of 305.
Use 7 as the next digit of our solution. 
Result so far: 12494.7
Subtract 4795 from 5100 to get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Moving on to step 9:
685 goes into 3050 4 times with a remainder of 310.
Record the quotient 4 as the next digit in the result. 
Result so far: 12494.74
Deduct 2740 from 3050 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Step 10:
The number 685 fits into 3100 4 times, leaving a remainder of 360.
Write down 4 as next digit of the result. 
Result so far: 12494.744
Subtracting 2740 from 3100 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Our division results in 12494.744 with a remaining 0.036.