51339965 ÷ 502 
We want to figure out the number of times 51339965 can be divided by 502.

Moving on to step 1:
5 divided by 502 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 502

Advancing to step 2:
502 can be fit into 51 0 times, resulting in a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Include the next digit (3) from the dividend after 51, then repeat: 513 / 502

Advancing to step 3:
If we divide 513 by 502, we get 1 and a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 502 from 513 to get 11.
Grab the next digit (3) from the dividend, add it to 11, then carry on: 113 / 502

Moving on to step 4:
When dividing 113 by 502, we get 0 with a remainder of 113.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 113 to get 113.
Append the next digit (9) from the dividend to 113 and continue with: 1139 / 502

Step 5:
If we divide 1139 by 502, we get 2 and a remainder of 135.
Use 2 as the next digit of our solution. 
Result so far: 102.0
If we subtract 1004 from 1139, we get 135.
Grab the next digit (9) from the dividend, add it to 135, then carry on: 1359 / 502

On to step 6:
502 goes into 1359 2 times with a remainder of 355.
Put 2 as the next digit of the answer. 
Result so far: 1022.0
Subtract 1004 from 1359 to get 355.
Bring next digit (6) of the dividend behind the 355 and repeat the process: 3556 / 502

Moving on to step 7:
502 can be fit into 3556 7 times, resulting in a remainder of 42.
Put 7 as the next digit of the answer. 
Result so far: 10227.0
Subtracting 3514 from 3556 leaves us with 42.
Take the next digit (5) from the dividend and append it to 42, then repeat: 425 / 502

Let's proceed to step 8:
502 goes into 425 0 times with a remainder of 425.
The number 0 becomes the next digit in our result. 
Result so far: 102270.0
Deduct 0 from 425 and we're left with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Advancing to step 9:
4250 divided by 502 is 8 with a remainder of 234.
Write down 8 as next digit of the result. 
Result so far: 102270.8
If we subtract 4016 from 4250, we get 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Moving on to step 10:
The number 502 fits into 2340 4 times, leaving a remainder of 332.
The number 4 becomes the next digit in our result. 
Result so far: 102270.84
Subtracting 2008 from 2340 leaves us with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Going ahead to step 11:
When dividing 3320 by 502, we get 6 with a remainder of 308.
The number 6 becomes the next digit in our result. 
Result so far: 102270.846
If we take 3012 away from 3320, we end up with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Going ahead to step 12:
3080 divided by 502 is 6 with a remainder of 68.
Put 6 as the next digit of the answer. 
Result so far: 102270.8466
Deduct 3012 from 3080 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final result is 102270.8466 with a remainder of 0.00068.