51445575 ÷ 509 
We're looking to find how many times 509 goes into 51445575.

On to step 1:
509 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 509

Step 2:
509 goes into 51 0 times with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Append the next digit (4) from the dividend to 51 and continue with: 514 / 509

Step 3:
If we divide 514 by 509, we get 1 and a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 509 from 514 and we're left with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 509

Advancing to step 4:
When dividing 54 by 509, we get 0 with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 54, we get 54.
Grab the next digit (5) from the dividend, add it to 54, then carry on: 545 / 509

On to step 5:
If we divide 545 by 509, we get 1 and a remainder of 36.
Use 1 as the next digit of our solution. 
Result so far: 101.0
If we subtract 509 from 545, we get 36.
Take the next digit (5) from the dividend and append it to 36, then repeat: 365 / 509

Let's proceed to step 6:
509 can be fit into 365 0 times, resulting in a remainder of 365.
Put 0 as the next digit of the answer. 
Result so far: 1010.0
Subtracting 0 from 365 leaves us with 365.
Include the next digit (7) from the dividend after 365, then repeat: 3657 / 509

On to step 7:
If we divide 3657 by 509, we get 7 and a remainder of 94.
Write down 7 as next digit of the result. 
Result so far: 10107.0
If we take 3563 away from 3657, we end up with 94.
Bring next digit (5) of the dividend behind the 94 and repeat the process: 945 / 509

Going ahead to step 8:
509 goes into 945 1 times with a remainder of 436.
Write down 1 as next digit of the result. 
Result so far: 101071.0
The remainder is 436 after subtracting 509 from 945.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Moving on to step 9:
4360 divided by 509 is 8 with a remainder of 288.
Use 8 as the next digit of our solution. 
Result so far: 101071.8
Subtracting 4072 from 4360 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Step 10:
509 goes into 2880 5 times with a remainder of 335.
The next digit of our result is 5. 
Result so far: 101071.85
The remainder is 335 after subtracting 2545 from 2880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Advancing to step 11:
509 can be fit into 3350 6 times, resulting in a remainder of 296.
Write down 6 as next digit of the result. 
Result so far: 101071.856
If we take 3054 away from 3350, we end up with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Step 12:
When dividing 2960 by 509, we get 5 with a remainder of 415.
Put 5 as the next digit of the answer. 
Result so far: 101071.8565
The remainder is 415 after subtracting 2545 from 2960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Going ahead to step 13:
509 goes into 4150 8 times with a remainder of 78.
Write down 8 as next digit of the result. 
Result so far: 101071.85658
If we take 4072 away from 4150, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 14:
When dividing 780 by 509, we get 1 with a remainder of 271.
The number 1 becomes the next digit in our result. 
Result so far: 101071.856581
Deduct 509 from 780 and we're left with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Advancing to step 15:
The number 509 fits into 2710 5 times, leaving a remainder of 165.
Write down 5 as next digit of the result. 
Result so far: 101071.8565815
Subtracting 2545 from 2710 leaves us with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Let's proceed to step 16:
If we divide 1650 by 509, we get 3 and a remainder of 123.
The next digit of our result is 3. 
Result so far: 101071.85658153
If we subtract 1527 from 1650, we get 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

The final result is 101071.85658153 with a remainder of 1.23e-07.