We look at the division of 12701355 by 509 
We want to figure out the number of times 12701355 can be divided by 509.

Advancing to step 1:
The number 509 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 509

Step 2:
12 divided by 509 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Include the next digit (7) from the dividend after 12, then repeat: 127 / 509

Step 3:
509 goes into 127 0 times with a remainder of 127.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 127, we get 127.
Grab the next digit (0) from the dividend, add it to 127, then carry on: 1270 / 509

Let's proceed to step 4:
The number 509 fits into 1270 2 times, leaving a remainder of 252.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 252 after subtracting 1018 from 1270.
Fetch the next digit (1) from the dividend, attach it to 252 and continue: 2521 / 509

Moving on to step 5:
When dividing 2521 by 509, we get 4 with a remainder of 485.
Put 4 as the next digit of the answer. 
Result so far: 24.0
Subtracting 2036 from 2521 leaves us with 485.
Bring next digit (3) of the dividend behind the 485 and repeat the process: 4853 / 509

Moving on to step 6:
509 goes into 4853 9 times with a remainder of 272.
The number 9 becomes the next digit in our result. 
Result so far: 249.0
Subtract 4581 from 4853 to get 272.
Fetch the next digit (5) from the dividend, attach it to 272 and continue: 2725 / 509

Step 7:
2725 divided by 509 is 5 with a remainder of 180.
Write down 5 as next digit of the result. 
Result so far: 2495.0
Deduct 2545 from 2725 and we're left with 180.
Fetch the next digit (5) from the dividend, attach it to 180 and continue: 1805 / 509

On to step 8:
1805 divided by 509 is 3 with a remainder of 278.
Use 3 as the next digit of our solution. 
Result so far: 24953.0
Subtract 1527 from 1805 to get 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Moving on to step 9:
2780 divided by 509 is 5 with a remainder of 235.
The number 5 becomes the next digit in our result. 
Result so far: 24953.5
Deduct 2545 from 2780 and we're left with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

On to step 10:
If we divide 2350 by 509, we get 4 and a remainder of 314.
The next digit of our result is 4. 
Result so far: 24953.54
If we take 2036 away from 2350, we end up with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

On to step 11:
509 can be fit into 3140 6 times, resulting in a remainder of 86.
Write down 6 as next digit of the result. 
Result so far: 24953.546
The remainder is 86 after subtracting 3054 from 3140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 12:
If we divide 860 by 509, we get 1 and a remainder of 351.
Record the quotient 1 as the next digit in the result. 
Result so far: 24953.5461
If we take 509 away from 860, we end up with 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

On to step 13:
3510 divided by 509 is 6 with a remainder of 456.
Put 6 as the next digit of the answer. 
Result so far: 24953.54616
If we subtract 3054 from 3510, we get 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Let's proceed to step 14:
If we divide 4560 by 509, we get 8 and a remainder of 488.
Put 8 as the next digit of the answer. 
Result so far: 24953.546168
Deduct 4072 from 4560 and we're left with 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Advancing to step 15:
509 can be fit into 4880 9 times, resulting in a remainder of 299.
Write down 9 as next digit of the result. 
Result so far: 24953.5461689
Deduct 4581 from 4880 and we're left with 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Going ahead to step 16:
If we divide 2990 by 509, we get 5 and a remainder of 445.
The number 5 becomes the next digit in our result. 
Result so far: 24953.54616895
If we take 2545 away from 2990, we end up with 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

The final result is 24953.54616895 with a remainder of 4.45e-07.