We're dividing 580438 by 66 
Let's see how many times 66 fits into 580438.

On to step 1:
5 divided by 66 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 66

Moving on to step 2:
If we divide 58 by 66, we get 0 and a remainder of 58.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 58, we end up with 58.
Append the next digit (0) from the dividend to 58 and continue with: 580 / 66

Let's proceed to step 3:
The number 66 fits into 580 8 times, leaving a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 528 from 580 and we're left with 52.
Take the next digit (4) from the dividend and append it to 52, then repeat: 524 / 66

Let's proceed to step 4:
If we divide 524 by 66, we get 7 and a remainder of 62.
The number 7 becomes the next digit in our result. 
Result so far: 87.0
If we subtract 462 from 524, we get 62.
Bring next digit (3) of the dividend behind the 62 and repeat the process: 623 / 66

On to step 5:
66 goes into 623 9 times with a remainder of 29.
Put 9 as the next digit of the answer. 
Result so far: 879.0
If we take 594 away from 623, we end up with 29.
Take the next digit (8) from the dividend and append it to 29, then repeat: 298 / 66

Step 6:
66 goes into 298 4 times with a remainder of 34.
The next digit of our result is 4. 
Result so far: 8794.0
Subtracting 264 from 298 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 7:
When dividing 340 by 66, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 8794.5
The remainder is 10 after subtracting 330 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
When dividing 100 by 66, we get 1 with a remainder of 34.
The number 1 becomes the next digit in our result. 
Result so far: 8794.51
If we subtract 66 from 100, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 9:
If we divide 340 by 66, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 8794.515
Deduct 330 from 340 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
100 divided by 66 is 1 with a remainder of 34.
Use 1 as the next digit of our solution. 
Result so far: 8794.5151
Subtracting 66 from 100 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
66 goes into 340 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 8794.51515
Subtracting 330 from 340 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
When dividing 100 by 66, we get 1 with a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 8794.515151
If we subtract 66 from 100, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 13:
When dividing 340 by 66, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 8794.5151515
The remainder is 10 after subtracting 330 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
66 goes into 100 1 times with a remainder of 34.
Record the quotient 1 as the next digit in the result. 
Result so far: 8794.51515151
Subtracting 66 from 100 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final result is 8794.51515151 with a remainder of 3.4e-08.