11965593 divided by 509 
We want to figure out the number of times 11965593 can be divided by 509.

Step 1:
1 divided by 509 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 509

Let's proceed to step 2:
509 can be fit into 11 0 times, resulting in a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 11, we end up with 11.
Include the next digit (9) from the dividend after 11, then repeat: 119 / 509

On to step 3:
509 can be fit into 119 0 times, resulting in a remainder of 119.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 119 and we're left with 119.
Include the next digit (6) from the dividend after 119, then repeat: 1196 / 509

Let's proceed to step 4:
The number 509 fits into 1196 2 times, leaving a remainder of 178.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 1018 from 1196, we get 178.
Append the next digit (5) from the dividend to 178 and continue with: 1785 / 509

Let's proceed to step 5:
509 can be fit into 1785 3 times, resulting in a remainder of 258.
Put 3 as the next digit of the answer. 
Result so far: 23.0
If we take 1527 away from 1785, we end up with 258.
Take the next digit (5) from the dividend and append it to 258, then repeat: 2585 / 509

Moving on to step 6:
509 goes into 2585 5 times with a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 235.0
The remainder is 40 after subtracting 2545 from 2585.
Append the next digit (9) from the dividend to 40 and continue with: 409 / 509

Going ahead to step 7:
When dividing 409 by 509, we get 0 with a remainder of 409.
Write down 0 as next digit of the result. 
Result so far: 2350.0
The remainder is 409 after subtracting 0 from 409.
Append the next digit (3) from the dividend to 409 and continue with: 4093 / 509

On to step 8:
4093 divided by 509 is 8 with a remainder of 21.
The next digit of our result is 8. 
Result so far: 23508.0
Subtract 4072 from 4093 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 9:
509 goes into 210 0 times with a remainder of 210.
Write down 0 as next digit of the result. 
Result so far: 23508.0
Subtract 0 from 210 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Moving on to step 10:
If we divide 2100 by 509, we get 4 and a remainder of 64.
The next digit of our result is 4. 
Result so far: 23508.04
The remainder is 64 after subtracting 2036 from 2100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 11:
509 goes into 640 1 times with a remainder of 131.
The next digit of our result is 1. 
Result so far: 23508.041
If we subtract 509 from 640, we get 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Step 12:
The number 509 fits into 1310 2 times, leaving a remainder of 292.
The number 2 becomes the next digit in our result. 
Result so far: 23508.0412
Deduct 1018 from 1310 and we're left with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

Step 13:
When dividing 2920 by 509, we get 5 with a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 23508.04125
The remainder is 375 after subtracting 2545 from 2920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 14:
When dividing 3750 by 509, we get 7 with a remainder of 187.
Use 7 as the next digit of our solution. 
Result so far: 23508.041257
If we subtract 3563 from 3750, we get 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Moving on to step 15:
The number 509 fits into 1870 3 times, leaving a remainder of 343.
Put 3 as the next digit of the answer. 
Result so far: 23508.0412573
If we subtract 1527 from 1870, we get 343.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

Going ahead to step 16:
When dividing 3430 by 509, we get 6 with a remainder of 376.
The next digit of our result is 6. 
Result so far: 23508.04125736
Deduct 3054 from 3430 and we're left with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

The final result is 23508.04125736 with a remainder of 3.76e-07.