We divide 42398662 by 512
We want to figure out the number of times 42398662 can be divided by 512.

On to step 1:
If we divide 4 by 512, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 512

Advancing to step 2:
When dividing 42 by 512, we get 0 with a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Grab the next digit (3) from the dividend, add it to 42, then carry on: 423 / 512

On to step 3:
The number 512 fits into 423 0 times, leaving a remainder of 423.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 423, we get 423.
Include the next digit (9) from the dividend after 423, then repeat: 4239 / 512

Let's proceed to step 4:
When dividing 4239 by 512, we get 8 with a remainder of 143.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 4096 from 4239 leaves us with 143.
Grab the next digit (8) from the dividend, add it to 143, then carry on: 1438 / 512

Advancing to step 5:
When dividing 1438 by 512, we get 2 with a remainder of 414.
Use 2 as the next digit of our solution. 
Result so far: 82.0
Deduct 1024 from 1438 and we're left with 414.
Fetch the next digit (6) from the dividend, attach it to 414 and continue: 4146 / 512

On to step 6:
512 goes into 4146 8 times with a remainder of 50.
Write down 8 as next digit of the result. 
Result so far: 828.0
Subtract 4096 from 4146 to get 50.
Grab the next digit (6) from the dividend, add it to 50, then carry on: 506 / 512

Advancing to step 7:
If we divide 506 by 512, we get 0 and a remainder of 506.
Put 0 as the next digit of the answer. 
Result so far: 8280.0
Subtracting 0 from 506 leaves us with 506.
Bring next digit (2) of the dividend behind the 506 and repeat the process: 5062 / 512

Moving on to step 8:
512 can be fit into 5062 9 times, resulting in a remainder of 454.
The next digit of our result is 9. 
Result so far: 82809.0
The remainder is 454 after subtracting 4608 from 5062.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Let's proceed to step 9:
512 can be fit into 4540 8 times, resulting in a remainder of 444.
The number 8 becomes the next digit in our result. 
Result so far: 82809.8
If we subtract 4096 from 4540, we get 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Step 10:
The number 512 fits into 4440 8 times, leaving a remainder of 344.
Put 8 as the next digit of the answer. 
Result so far: 82809.88
Subtracting 4096 from 4440 leaves us with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

The quotient of the division is 82809.88, and the remainder is 0.344.