866644 ÷ 28 
We're looking to find how many times 28 goes into 866644.

On to step 1:
If we divide 8 by 28, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 28

On to step 2:
28 goes into 86 3 times with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 84 away from 86, we end up with 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 28

Advancing to step 3:
26 divided by 28 is 0 with a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 30.0
Subtracting 0 from 26 leaves us with 26.
Grab the next digit (6) from the dividend, add it to 26, then carry on: 266 / 28

Advancing to step 4:
266 divided by 28 is 9 with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 309.0
Subtracting 252 from 266 leaves us with 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 28

Let's proceed to step 5:
28 can be fit into 144 5 times, resulting in a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 3095.0
Subtract 140 from 144 to get 4.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 28

Advancing to step 6:
44 divided by 28 is 1 with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 30951.0
Subtracting 28 from 44 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 7:
28 can be fit into 160 5 times, resulting in a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 30951.5
The remainder is 20 after subtracting 140 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
200 divided by 28 is 7 with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 30951.57
Subtracting 196 from 200 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
40 divided by 28 is 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 30951.571
Deduct 28 from 40 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 10:
If we divide 120 by 28, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 30951.5714
If we subtract 112 from 120, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 11:
The number 28 fits into 80 2 times, leaving a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 30951.57142
Deduct 56 from 80 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 12:
240 divided by 28 is 8 with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 30951.571428
If we take 224 away from 240, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 13:
If we divide 160 by 28, we get 5 and a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 30951.5714285
If we subtract 140 from 160, 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.

On to step 14:
When dividing 200 by 28, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 30951.57142857
The remainder is 4 after subtracting 196 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 30951.57142857 and a remainder of 4e-09.