We look at the division of 66346568 by 520 
We're looking to find how many times 520 goes into 66346568.

Moving on to step 1:
520 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 520

Going ahead to step 2:
If we divide 66 by 520, we get 0 and a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Include the next digit (3) from the dividend after 66, then repeat: 663 / 520

On to step 3:
663 divided by 520 is 1 with a remainder of 143.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 143 after subtracting 520 from 663.
Grab the next digit (4) from the dividend, add it to 143, then carry on: 1434 / 520

Going ahead to step 4:
The number 520 fits into 1434 2 times, leaving a remainder of 394.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 1040 from 1434 and we're left with 394.
Fetch the next digit (6) from the dividend, attach it to 394 and continue: 3946 / 520

Let's proceed to step 5:
If we divide 3946 by 520, we get 7 and a remainder of 306.
Write down 7 as next digit of the result. 
Result so far: 127.0
The remainder is 306 after subtracting 3640 from 3946.
Append the next digit (5) from the dividend to 306 and continue with: 3065 / 520

Advancing to step 6:
The number 520 fits into 3065 5 times, leaving a remainder of 465.
Use 5 as the next digit of our solution. 
Result so far: 1275.0
Subtract 2600 from 3065 to get 465.
Take the next digit (6) from the dividend and append it to 465, then repeat: 4656 / 520

On to step 7:
520 can be fit into 4656 8 times, resulting in a remainder of 496.
The number 8 becomes the next digit in our result. 
Result so far: 12758.0
If we subtract 4160 from 4656, we get 496.
Append the next digit (8) from the dividend to 496 and continue with: 4968 / 520

Let's proceed to step 8:
If we divide 4968 by 520, we get 9 and a remainder of 288.
Put 9 as the next digit of the answer. 
Result so far: 127589.0
Subtract 4680 from 4968 to get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Step 9:
520 can be fit into 2880 5 times, resulting in a remainder of 280.
Write down 5 as next digit of the result. 
Result so far: 127589.5
If we take 2600 away from 2880, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 10:
520 can be fit into 2800 5 times, resulting in a remainder of 200.
Put 5 as the next digit of the answer. 
Result so far: 127589.55
Deduct 2600 from 2800 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Our division results in 127589.55 with a remaining 0.2.