578249 ÷ 451 
We're looking to find how many times 451 goes into 578249.

On to step 1:
5 divided by 451 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 451

Let's proceed to step 2:
If we divide 57 by 451, we get 0 and a remainder of 57.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 57 leaves us with 57.
Include the next digit (8) from the dividend after 57, then repeat: 578 / 451

Let's proceed to step 3:
If we divide 578 by 451, we get 1 and a remainder of 127.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 451 from 578 and we're left with 127.
Fetch the next digit (2) from the dividend, attach it to 127 and continue: 1272 / 451

Moving on to step 4:
451 can be fit into 1272 2 times, resulting in a remainder of 370.
Use 2 as the next digit of our solution. 
Result so far: 12.0
The remainder is 370 after subtracting 902 from 1272.
Include the next digit (4) from the dividend after 370, then repeat: 3704 / 451

Going ahead to step 5:
If we divide 3704 by 451, we get 8 and a remainder of 96.
The next digit of our result is 8. 
Result so far: 128.0
If we take 3608 away from 3704, we end up with 96.
Take the next digit (9) from the dividend and append it to 96, then repeat: 969 / 451

On to step 6:
If we divide 969 by 451, we get 2 and a remainder of 67.
Put 2 as the next digit of the answer. 
Result so far: 1282.0
The remainder is 67 after subtracting 902 from 969.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 7:
When dividing 670 by 451, we get 1 with a remainder of 219.
Write down 1 as next digit of the result. 
Result so far: 1282.1
Subtract 451 from 670 to get 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Advancing to step 8:
When dividing 2190 by 451, we get 4 with a remainder of 386.
Use 4 as the next digit of our solution. 
Result so far: 1282.14
If we subtract 1804 from 2190, we get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Going ahead to step 9:
If we divide 3860 by 451, we get 8 and a remainder of 252.
Record the quotient 8 as the next digit in the result. 
Result so far: 1282.148
Subtract 3608 from 3860 to get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Step 10:
If we divide 2520 by 451, we get 5 and a remainder of 265.
The number 5 becomes the next digit in our result. 
Result so far: 1282.1485
Subtract 2255 from 2520 to get 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Let's proceed to step 11:
2650 divided by 451 is 5 with a remainder of 395.
The next digit of our result is 5. 
Result so far: 1282.14855
Subtracting 2255 from 2650 leaves us with 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

After the division, we end up with 1282.14855 and a remainder of 0.000395.