42282375 ÷ 409 
Our goal is to divide 42282375 by 409.

On to step 1:
When dividing 4 by 409, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 409

Advancing to step 2:
If we divide 42 by 409, we get 0 and a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Include the next digit (2) from the dividend after 42, then repeat: 422 / 409

Step 3:
409 can be fit into 422 1 times, resulting in a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 409 from 422 leaves us with 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 409

On to step 4:
138 divided by 409 is 0 with a remainder of 138.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 138, we end up with 138.
Bring next digit (2) of the dividend behind the 138 and repeat the process: 1382 / 409

Step 5:
If we divide 1382 by 409, we get 3 and a remainder of 155.
Write down 3 as next digit of the result. 
Result so far: 103.0
Subtracting 1227 from 1382 leaves us with 155.
Fetch the next digit (3) from the dividend, attach it to 155 and continue: 1553 / 409

Going ahead to step 6:
If we divide 1553 by 409, we get 3 and a remainder of 326.
The number 3 becomes the next digit in our result. 
Result so far: 1033.0
The remainder is 326 after subtracting 1227 from 1553.
Grab the next digit (7) from the dividend, add it to 326, then carry on: 3267 / 409

Advancing to step 7:
409 can be fit into 3267 7 times, resulting in a remainder of 404.
The number 7 becomes the next digit in our result. 
Result so far: 10337.0
Subtract 2863 from 3267 to get 404.
Fetch the next digit (5) from the dividend, attach it to 404 and continue: 4045 / 409

Step 8:
If we divide 4045 by 409, we get 9 and a remainder of 364.
The next digit of our result is 9. 
Result so far: 103379.0
The remainder is 364 after subtracting 3681 from 4045.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Going ahead to step 9:
409 can be fit into 3640 8 times, resulting in a remainder of 368.
Use 8 as the next digit of our solution. 
Result so far: 103379.8
If we take 3272 away from 3640, we end up with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Step 10:
409 goes into 3680 8 times with a remainder of 408.
The number 8 becomes the next digit in our result. 
Result so far: 103379.88
If we subtract 3272 from 3680, we get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

After the division, we end up with 103379.88 and a remainder of 0.408.