866407 ÷ 56 
We're looking to find how many times 56 goes into 866407.

Moving on to step 1:
The number 56 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 56

Let's proceed to step 2:
The number 56 fits into 86 1 times, leaving a remainder of 30.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 56 from 86, we get 30.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 56

Moving on to step 3:
56 can be fit into 306 5 times, resulting in a remainder of 26.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 280 away from 306, we end up with 26.
Bring next digit (4) of the dividend behind the 26 and repeat the process: 264 / 56

Moving on to step 4:
When dividing 264 by 56, we get 4 with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 154.0
Deduct 224 from 264 and we're left with 40.
Bring next digit (0) of the dividend behind the 40 and repeat the process: 400 / 56

Step 5:
400 divided by 56 is 7 with a remainder of 8.
The number 7 becomes the next digit in our result. 
Result so far: 1547.0
If we subtract 392 from 400, we get 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 56

Step 6:
The number 56 fits into 87 1 times, leaving a remainder of 31.
Put 1 as the next digit of the answer. 
Result so far: 15471.0
Subtract 56 from 87 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 7:
When dividing 310 by 56, we get 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 15471.5
Deduct 280 from 310 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
When dividing 300 by 56, we get 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 15471.55
If we take 280 away from 300, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 15471.55, with a leftover of 0.02.