63923508 ÷ 51 
We're looking to find how many times 51 goes into 63923508.

Moving on to step 1:
51 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 51

Going ahead to step 2:
63 divided by 51 is 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 51 from 63 leaves us with 12.
Take the next digit (9) from the dividend and append it to 12, then repeat: 129 / 51

Let's proceed to step 3:
129 divided by 51 is 2 with a remainder of 27.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 27 after subtracting 102 from 129.
Bring next digit (2) of the dividend behind the 27 and repeat the process: 272 / 51

Let's proceed to step 4:
The number 51 fits into 272 5 times, leaving a remainder of 17.
The next digit of our result is 5. 
Result so far: 125.0
If we subtract 255 from 272, we get 17.
Append the next digit (3) from the dividend to 17 and continue with: 173 / 51

Step 5:
51 can be fit into 173 3 times, resulting in a remainder of 20.
Use 3 as the next digit of our solution. 
Result so far: 1253.0
Deduct 153 from 173 and we're left with 20.
Bring next digit (5) of the dividend behind the 20 and repeat the process: 205 / 51

On to step 6:
51 can be fit into 205 4 times, resulting in a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 12534.0
If we subtract 204 from 205, we get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 51

Moving on to step 7:
The number 51 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 125340.0
The remainder is 10 after subtracting 0 from 10.
Include the next digit (8) from the dividend after 10, then repeat: 108 / 51

On to step 8:
51 goes into 108 2 times with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 1253402.0
If we subtract 102 from 108, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 9:
51 goes into 60 1 times with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 1253402.1
If we take 51 away from 60, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 10:
90 divided by 51 is 1 with a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 1253402.11
Subtracting 51 from 90 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Our division results in 1253402.11 with a remaining 0.039.