866490 ÷ 34 
Our goal is to divide 866490 by 34.

Moving on to step 1:
8 divided by 34 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 34

Let's proceed to step 2:
When dividing 86 by 34, we get 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 68 from 86, we get 18.
Grab the next digit (6) from the dividend, add it to 18, then carry on: 186 / 34

On to step 3:
34 can be fit into 186 5 times, resulting in a remainder of 16.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
The remainder is 16 after subtracting 170 from 186.
Bring next digit (4) of the dividend behind the 16 and repeat the process: 164 / 34

On to step 4:
If we divide 164 by 34, we get 4 and a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 254.0
The remainder is 28 after subtracting 136 from 164.
Include the next digit (9) from the dividend after 28, then repeat: 289 / 34

Advancing to step 5:
34 goes into 289 8 times with a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 2548.0
If we subtract 272 from 289, we get 17.
Include the next digit (0) from the dividend after 17, then repeat: 170 / 34

Advancing to step 6:
170 divided by 34 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 25485.0
If we subtract 170 from 170, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
34 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25485.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
34 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 25485.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 25485.0, with a leftover of 0.0.