Let's divide 76838609 by 509
We want to figure out the number of times 76838609 can be divided by 509.

On to step 1:
When dividing 7 by 509, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 509

Let's proceed to step 2:
If we divide 76 by 509, we get 0 and a remainder of 76.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 76, we end up with 76.
Bring next digit (8) of the dividend behind the 76 and repeat the process: 768 / 509

Step 3:
509 goes into 768 1 times with a remainder of 259.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 509 from 768 and we're left with 259.
Include the next digit (3) from the dividend after 259, then repeat: 2593 / 509

Moving on to step 4:
2593 divided by 509 is 5 with a remainder of 48.
The next digit of our result is 5. 
Result so far: 15.0
Deduct 2545 from 2593 and we're left with 48.
Grab the next digit (8) from the dividend, add it to 48, then carry on: 488 / 509

Step 5:
If we divide 488 by 509, we get 0 and a remainder of 488.
Use 0 as the next digit of our solution. 
Result so far: 150.0
The remainder is 488 after subtracting 0 from 488.
Include the next digit (6) from the dividend after 488, then repeat: 4886 / 509

Going ahead to step 6:
509 goes into 4886 9 times with a remainder of 305.
Record the quotient 9 as the next digit in the result. 
Result so far: 1509.0
Subtract 4581 from 4886 to get 305.
Bring next digit (0) of the dividend behind the 305 and repeat the process: 3050 / 509

Moving on to step 7:
3050 divided by 509 is 5 with a remainder of 505.
The next digit of our result is 5. 
Result so far: 15095.0
Subtract 2545 from 3050 to get 505.
Bring next digit (9) of the dividend behind the 505 and repeat the process: 5059 / 509

Going ahead to step 8:
The number 509 fits into 5059 9 times, leaving a remainder of 478.
Record the quotient 9 as the next digit in the result. 
Result so far: 150959.0
Subtracting 4581 from 5059 leaves us with 478.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4780, and continue the process.

Going ahead to step 9:
If we divide 4780 by 509, we get 9 and a remainder of 199.
Put 9 as the next digit of the answer. 
Result so far: 150959.9
If we take 4581 away from 4780, we end up with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Moving on to step 10:
509 can be fit into 1990 3 times, resulting in a remainder of 463.
The number 3 becomes the next digit in our result. 
Result so far: 150959.93
Subtracting 1527 from 1990 leaves us with 463.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4630, and continue the process.

Moving on to step 11:
509 can be fit into 4630 9 times, resulting in a remainder of 49.
Use 9 as the next digit of our solution. 
Result so far: 150959.939
Deduct 4581 from 4630 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 12:
When dividing 490 by 509, we get 0 with a remainder of 490.
The number 0 becomes the next digit in our result. 
Result so far: 150959.939
Subtracting 0 from 490 leaves us with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Moving on to step 13:
When dividing 4900 by 509, we get 9 with a remainder of 319.
The number 9 becomes the next digit in our result. 
Result so far: 150959.93909
If we subtract 4581 from 4900, we get 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Advancing to step 14:
When dividing 3190 by 509, we get 6 with a remainder of 136.
Record the quotient 6 as the next digit in the result. 
Result so far: 150959.939096
If we subtract 3054 from 3190, we get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

On to step 15:
If we divide 1360 by 509, we get 2 and a remainder of 342.
The next digit of our result is 2. 
Result so far: 150959.9390962
Subtract 1018 from 1360 to get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

On to step 16:
The number 509 fits into 3420 6 times, leaving a remainder of 366.
The next digit of our result is 6. 
Result so far: 150959.93909626
Deduct 3054 from 3420 and we're left with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

The final result is 150959.93909626 with a remainder of 3.66e-07.