33638611 ÷ 866 
We're looking to find how many times 866 goes into 33638611.

On to step 1:
3 divided by 866 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 866

Advancing to step 2:
866 goes into 33 0 times with a remainder of 33.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Take the next digit (6) from the dividend and append it to 33, then repeat: 336 / 866

Going ahead to step 3:
The number 866 fits into 336 0 times, leaving a remainder of 336.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 336, we end up with 336.
Include the next digit (3) from the dividend after 336, then repeat: 3363 / 866

Let's proceed to step 4:
866 can be fit into 3363 3 times, resulting in a remainder of 765.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 2598 from 3363, we get 765.
Include the next digit (8) from the dividend after 765, then repeat: 7658 / 866

Let's proceed to step 5:
866 can be fit into 7658 8 times, resulting in a remainder of 730.
Write down 8 as next digit of the result. 
Result so far: 38.0
Deduct 6928 from 7658 and we're left with 730.
Bring next digit (6) of the dividend behind the 730 and repeat the process: 7306 / 866

On to step 6:
When dividing 7306 by 866, we get 8 with a remainder of 378.
Use 8 as the next digit of our solution. 
Result so far: 388.0
If we subtract 6928 from 7306, we get 378.
Take the next digit (1) from the dividend and append it to 378, then repeat: 3781 / 866

Going ahead to step 7:
3781 divided by 866 is 4 with a remainder of 317.
The number 4 becomes the next digit in our result. 
Result so far: 3884.0
Subtract 3464 from 3781 to get 317.
Include the next digit (1) from the dividend after 317, then repeat: 3171 / 866

Let's proceed to step 8:
If we divide 3171 by 866, we get 3 and a remainder of 573.
Use 3 as the next digit of our solution. 
Result so far: 38843.0
Deduct 2598 from 3171 and we're left with 573.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5730, and continue the process.

Going ahead to step 9:
The number 866 fits into 5730 6 times, leaving a remainder of 534.
Record the quotient 6 as the next digit in the result. 
Result so far: 38843.6
The remainder is 534 after subtracting 5196 from 5730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

Step 10:
If we divide 5340 by 866, we get 6 and a remainder of 144.
Record the quotient 6 as the next digit in the result. 
Result so far: 38843.66
If we take 5196 away from 5340, we end up with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

The final outcome is 38843.66, with a leftover of 0.144.