42515627 ÷ 663 
We want to figure out the number of times 42515627 can be divided by 663.

Advancing to step 1:
When dividing 4 by 663, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 663

Going ahead to step 2:
The number 663 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Fetch the next digit (5) from the dividend, attach it to 42 and continue: 425 / 663

Step 3:
663 goes into 425 0 times with a remainder of 425.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 425, we get 425.
Take the next digit (1) from the dividend and append it to 425, then repeat: 4251 / 663

On to step 4:
663 can be fit into 4251 6 times, resulting in a remainder of 273.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 3978 from 4251 and we're left with 273.
Include the next digit (5) from the dividend after 273, then repeat: 2735 / 663

Going ahead to step 5:
663 goes into 2735 4 times with a remainder of 83.
The next digit of our result is 4. 
Result so far: 64.0
The remainder is 83 after subtracting 2652 from 2735.
Append the next digit (6) from the dividend to 83 and continue with: 836 / 663

Let's proceed to step 6:
The number 663 fits into 836 1 times, leaving a remainder of 173.
Put 1 as the next digit of the answer. 
Result so far: 641.0
If we subtract 663 from 836, we get 173.
Include the next digit (2) from the dividend after 173, then repeat: 1732 / 663

Step 7:
1732 divided by 663 is 2 with a remainder of 406.
Write down 2 as next digit of the result. 
Result so far: 6412.0
If we take 1326 away from 1732, we end up with 406.
Append the next digit (7) from the dividend to 406 and continue with: 4067 / 663

Going ahead to step 8:
If we divide 4067 by 663, we get 6 and a remainder of 89.
The next digit of our result is 6. 
Result so far: 64126.0
If we take 3978 away from 4067, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 9:
663 goes into 890 1 times with a remainder of 227.
The number 1 becomes the next digit in our result. 
Result so far: 64126.1
If we subtract 663 from 890, we get 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Moving on to step 10:
When dividing 2270 by 663, we get 3 with a remainder of 281.
Record the quotient 3 as the next digit in the result. 
Result so far: 64126.13
The remainder is 281 after subtracting 1989 from 2270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

Let's proceed to step 11:
If we divide 2810 by 663, we get 4 and a remainder of 158.
Record the quotient 4 as the next digit in the result. 
Result so far: 64126.134
The remainder is 158 after subtracting 2652 from 2810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Let's proceed to step 12:
The number 663 fits into 1580 2 times, leaving a remainder of 254.
The number 2 becomes the next digit in our result. 
Result so far: 64126.1342
If we subtract 1326 from 1580, we get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Step 13:
The number 663 fits into 2540 3 times, leaving a remainder of 551.
Write down 3 as next digit of the result. 
Result so far: 64126.13423
If we take 1989 away from 2540, we end up with 551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

Let's proceed to step 14:
If we divide 5510 by 663, we get 8 and a remainder of 206.
Use 8 as the next digit of our solution. 
Result so far: 64126.134238
Deduct 5304 from 5510 and we're left with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Advancing to step 15:
2060 divided by 663 is 3 with a remainder of 71.
Use 3 as the next digit of our solution. 
Result so far: 64126.1342383
Subtract 1989 from 2060 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 16:
If we divide 710 by 663, we get 1 and a remainder of 47.
Use 1 as the next digit of our solution. 
Result so far: 64126.13423831
Subtracting 663 from 710 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

The final result is 64126.13423831 with a remainder of 4.7e-08.