We look at the division of 9997409 by 509 
Let's see how many times 509 fits into 9997409.

Going ahead to step 1:
If we divide 9 by 509, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 509

Step 2:
509 can be fit into 99 0 times, resulting in a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 99 to get 99.
Append the next digit (9) from the dividend to 99 and continue with: 999 / 509

On to step 3:
If we divide 999 by 509, we get 1 and a remainder of 490.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 509 from 999 to get 490.
Fetch the next digit (7) from the dividend, attach it to 490 and continue: 4907 / 509

Moving on to step 4:
If we divide 4907 by 509, we get 9 and a remainder of 326.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtracting 4581 from 4907 leaves us with 326.
Fetch the next digit (4) from the dividend, attach it to 326 and continue: 3264 / 509

On to step 5:
When dividing 3264 by 509, we get 6 with a remainder of 210.
Write down 6 as next digit of the result. 
Result so far: 196.0
Subtract 3054 from 3264 to get 210.
Include the next digit (0) from the dividend after 210, then repeat: 2100 / 509

Going ahead to step 6:
509 goes into 2100 4 times with a remainder of 64.
Use 4 as the next digit of our solution. 
Result so far: 1964.0
Subtract 2036 from 2100 to get 64.
Grab the next digit (9) from the dividend, add it to 64, then carry on: 649 / 509

Moving on to step 7:
509 goes into 649 1 times with a remainder of 140.
Write down 1 as next digit of the result. 
Result so far: 19641.0
If we take 509 away from 649, we end up with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 8:
509 goes into 1400 2 times with a remainder of 382.
The number 2 becomes the next digit in our result. 
Result so far: 19641.2
The remainder is 382 after subtracting 1018 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

On to step 9:
509 goes into 3820 7 times with a remainder of 257.
Put 7 as the next digit of the answer. 
Result so far: 19641.27
The remainder is 257 after subtracting 3563 from 3820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Advancing to step 10:
If we divide 2570 by 509, we get 5 and a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 19641.275
Subtracting 2545 from 2570 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 11:
509 can be fit into 250 0 times, resulting in a remainder of 250.
The number 0 becomes the next digit in our result. 
Result so far: 19641.275
If we take 0 away from 250, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 12:
When dividing 2500 by 509, we get 4 with a remainder of 464.
The next digit of our result is 4. 
Result so far: 19641.27504
Deduct 2036 from 2500 and we're left with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

On to step 13:
When dividing 4640 by 509, we get 9 with a remainder of 59.
Write down 9 as next digit of the result. 
Result so far: 19641.275049
Deduct 4581 from 4640 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 14:
509 goes into 590 1 times with a remainder of 81.
Use 1 as the next digit of our solution. 
Result so far: 19641.2750491
If we subtract 509 from 590, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 15:
The number 509 fits into 810 1 times, leaving a remainder of 301.
Record the quotient 1 as the next digit in the result. 
Result so far: 19641.27504911
If we take 509 away from 810, we end up with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

The quotient of the division is 19641.27504911, and the remainder is 3.01e-07.