We look at the division of 66856408 by 480 
We want to divide 66856408 by 480.

Let's proceed to step 1:
When dividing 6 by 480, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 480

Advancing to step 2:
66 divided by 480 is 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Grab the next digit (8) from the dividend, add it to 66, then carry on: 668 / 480

Let's proceed to step 3:
When dividing 668 by 480, we get 1 with a remainder of 188.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 480 from 668 leaves us with 188.
Append the next digit (5) from the dividend to 188 and continue with: 1885 / 480

Going ahead to step 4:
When dividing 1885 by 480, we get 3 with a remainder of 445.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we take 1440 away from 1885, we end up with 445.
Bring next digit (6) of the dividend behind the 445 and repeat the process: 4456 / 480

Advancing to step 5:
480 can be fit into 4456 9 times, resulting in a remainder of 136.
The number 9 becomes the next digit in our result. 
Result so far: 139.0
The remainder is 136 after subtracting 4320 from 4456.
Include the next digit (4) from the dividend after 136, then repeat: 1364 / 480

Advancing to step 6:
When dividing 1364 by 480, we get 2 with a remainder of 404.
Record the quotient 2 as the next digit in the result. 
Result so far: 1392.0
The remainder is 404 after subtracting 960 from 1364.
Grab the next digit (0) from the dividend, add it to 404, then carry on: 4040 / 480

Advancing to step 7:
The number 480 fits into 4040 8 times, leaving a remainder of 200.
Use 8 as the next digit of our solution. 
Result so far: 13928.0
The remainder is 200 after subtracting 3840 from 4040.
Append the next digit (8) from the dividend to 200 and continue with: 2008 / 480

On to step 8:
The number 480 fits into 2008 4 times, leaving a remainder of 88.
Write down 4 as next digit of the result. 
Result so far: 139284.0
Subtracting 1920 from 2008 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 9:
480 can be fit into 880 1 times, resulting in a remainder of 400.
Put 1 as the next digit of the answer. 
Result so far: 139284.1
The remainder is 400 after subtracting 480 from 880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 10:
480 can be fit into 4000 8 times, resulting in a remainder of 160.
Write down 8 as next digit of the result. 
Result so far: 139284.18
Subtract 3840 from 4000 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 11:
When dividing 1600 by 480, we get 3 with a remainder of 160.
Use 3 as the next digit of our solution. 
Result so far: 139284.183
Subtracting 1440 from 1600 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 12:
480 goes into 1600 3 times with a remainder of 160.
The next digit of our result is 3. 
Result so far: 139284.1833
The remainder is 160 after subtracting 1440 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

After the division, we end up with 139284.1833 and a remainder of 0.0016.