We're dividing 42408066 by 317 
Let's see how many times 317 fits into 42408066.

Let's proceed to step 1:
If we divide 4 by 317, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 317

On to step 2:
317 goes into 42 0 times with a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Append the next digit (4) from the dividend to 42 and continue with: 424 / 317

On to step 3:
If we divide 424 by 317, we get 1 and a remainder of 107.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 317 from 424 and we're left with 107.
Fetch the next digit (0) from the dividend, attach it to 107 and continue: 1070 / 317

Step 4:
The number 317 fits into 1070 3 times, leaving a remainder of 119.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtracting 951 from 1070 leaves us with 119.
Append the next digit (8) from the dividend to 119 and continue with: 1198 / 317

On to step 5:
317 can be fit into 1198 3 times, resulting in a remainder of 247.
Write down 3 as next digit of the result. 
Result so far: 133.0
If we subtract 951 from 1198, we get 247.
Fetch the next digit (0) from the dividend, attach it to 247 and continue: 2470 / 317

Let's proceed to step 6:
2470 divided by 317 is 7 with a remainder of 251.
Write down 7 as next digit of the result. 
Result so far: 1337.0
The remainder is 251 after subtracting 2219 from 2470.
Append the next digit (6) from the dividend to 251 and continue with: 2516 / 317

Step 7:
When dividing 2516 by 317, we get 7 with a remainder of 297.
The next digit of our result is 7. 
Result so far: 13377.0
Deduct 2219 from 2516 and we're left with 297.
Bring next digit (6) of the dividend behind the 297 and repeat the process: 2976 / 317

Advancing to step 8:
When dividing 2976 by 317, we get 9 with a remainder of 123.
Write down 9 as next digit of the result. 
Result so far: 133779.0
If we subtract 2853 from 2976, we get 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

On to step 9:
When dividing 1230 by 317, we get 3 with a remainder of 279.
The number 3 becomes the next digit in our result. 
Result so far: 133779.3
Subtracting 951 from 1230 leaves us with 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Going ahead to step 10:
317 goes into 2790 8 times with a remainder of 254.
Use 8 as the next digit of our solution. 
Result so far: 133779.38
Deduct 2536 from 2790 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

On to step 11:
317 can be fit into 2540 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 133779.388
Deduct 2536 from 2540 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 133779.388 with a remaining 0.0004.