Let's divide 42579865 by 994
We want to figure out the number of times 42579865 can be divided by 994.

On to step 1:
994 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 994

Going ahead to step 2:
42 divided by 994 is 0 with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Include the next digit (5) from the dividend after 42, then repeat: 425 / 994

Step 3:
994 goes into 425 0 times with a remainder of 425.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 425 and we're left with 425.
Include the next digit (7) from the dividend after 425, then repeat: 4257 / 994

Advancing to step 4:
994 goes into 4257 4 times with a remainder of 281.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 3976 from 4257 and we're left with 281.
Include the next digit (9) from the dividend after 281, then repeat: 2819 / 994

Step 5:
When dividing 2819 by 994, we get 2 with a remainder of 831.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Subtract 1988 from 2819 to get 831.
Fetch the next digit (8) from the dividend, attach it to 831 and continue: 8318 / 994

On to step 6:
When dividing 8318 by 994, we get 8 with a remainder of 366.
Record the quotient 8 as the next digit in the result. 
Result so far: 428.0
Subtract 7952 from 8318 to get 366.
Include the next digit (6) from the dividend after 366, then repeat: 3666 / 994

Moving on to step 7:
994 goes into 3666 3 times with a remainder of 684.
The number 3 becomes the next digit in our result. 
Result so far: 4283.0
Subtracting 2982 from 3666 leaves us with 684.
Grab the next digit (5) from the dividend, add it to 684, then carry on: 6845 / 994

On to step 8:
994 goes into 6845 6 times with a remainder of 881.
Put 6 as the next digit of the answer. 
Result so far: 42836.0
Subtract 5964 from 6845 to get 881.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8810, and continue the process.

Let's proceed to step 9:
If we divide 8810 by 994, we get 8 and a remainder of 858.
The number 8 becomes the next digit in our result. 
Result so far: 42836.8
If we subtract 7952 from 8810, we get 858.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8580, and continue the process.

Advancing to step 10:
994 goes into 8580 8 times with a remainder of 628.
The next digit of our result is 8. 
Result so far: 42836.88
Subtracting 7952 from 8580 leaves us with 628.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6280, and continue the process.

After the division, we end up with 42836.88 and a remainder of 0.628.