76343909 divided by 519 
The aim is to understand the frequency of 519 in 76343909.

Let's proceed to step 1:
519 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (6) of the dividend behind the 7 and repeat the process: 76 / 519

Step 2:
519 goes into 76 0 times with a remainder of 76.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 76, we get 76.
Grab the next digit (3) from the dividend, add it to 76, then carry on: 763 / 519

Advancing to step 3:
When dividing 763 by 519, we get 1 with a remainder of 244.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 519 away from 763, we end up with 244.
Take the next digit (4) from the dividend and append it to 244, then repeat: 2444 / 519

Step 4:
If we divide 2444 by 519, we get 4 and a remainder of 368.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 2076 from 2444, we get 368.
Bring next digit (3) of the dividend behind the 368 and repeat the process: 3683 / 519

Advancing to step 5:
When dividing 3683 by 519, we get 7 with a remainder of 50.
Write down 7 as next digit of the result. 
Result so far: 147.0
Subtract 3633 from 3683 to get 50.
Include the next digit (9) from the dividend after 50, then repeat: 509 / 519

Advancing to step 6:
The number 519 fits into 509 0 times, leaving a remainder of 509.
Record the quotient 0 as the next digit in the result. 
Result so far: 1470.0
The remainder is 509 after subtracting 0 from 509.
Bring next digit (0) of the dividend behind the 509 and repeat the process: 5090 / 519

Let's proceed to step 7:
The number 519 fits into 5090 9 times, leaving a remainder of 419.
Record the quotient 9 as the next digit in the result. 
Result so far: 14709.0
The remainder is 419 after subtracting 4671 from 5090.
Append the next digit (9) from the dividend to 419 and continue with: 4199 / 519

Going ahead to step 8:
519 can be fit into 4199 8 times, resulting in a remainder of 47.
Use 8 as the next digit of our solution. 
Result so far: 147098.0
If we subtract 4152 from 4199, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 9:
If we divide 470 by 519, we get 0 and a remainder of 470.
Use 0 as the next digit of our solution. 
Result so far: 147098.0
If we subtract 0 from 470, we get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

On to step 10:
If we divide 4700 by 519, we get 9 and a remainder of 29.
The number 9 becomes the next digit in our result. 
Result so far: 147098.09
Subtract 4671 from 4700 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 11:
When dividing 290 by 519, we get 0 with a remainder of 290.
The next digit of our result is 0. 
Result so far: 147098.09
The remainder is 290 after subtracting 0 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Advancing to step 12:
The number 519 fits into 2900 5 times, leaving a remainder of 305.
The next digit of our result is 5. 
Result so far: 147098.0905
If we take 2595 away from 2900, we end up with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Let's proceed to step 13:
If we divide 3050 by 519, we get 5 and a remainder of 455.
Write down 5 as next digit of the result. 
Result so far: 147098.09055
Subtract 2595 from 3050 to get 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

The final outcome is 147098.09055, with a leftover of 0.000455.