Let's divide 40609550 by 519
The aim is to understand the frequency of 519 in 40609550.

On to step 1:
When dividing 4 by 519, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 519

Advancing to step 2:
40 divided by 519 is 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Bring next digit (6) of the dividend behind the 40 and repeat the process: 406 / 519

On to step 3:
406 divided by 519 is 0 with a remainder of 406.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 406, we end up with 406.
Grab the next digit (0) from the dividend, add it to 406, then carry on: 4060 / 519

Advancing to step 4:
If we divide 4060 by 519, we get 7 and a remainder of 427.
Write down 7 as next digit of the result. 
Result so far: 7.0
Deduct 3633 from 4060 and we're left with 427.
Grab the next digit (9) from the dividend, add it to 427, then carry on: 4279 / 519

Step 5:
If we divide 4279 by 519, we get 8 and a remainder of 127.
Record the quotient 8 as the next digit in the result. 
Result so far: 78.0
If we take 4152 away from 4279, we end up with 127.
Append the next digit (5) from the dividend to 127 and continue with: 1275 / 519

Step 6:
519 goes into 1275 2 times with a remainder of 237.
Write down 2 as next digit of the result. 
Result so far: 782.0
Deduct 1038 from 1275 and we're left with 237.
Grab the next digit (5) from the dividend, add it to 237, then carry on: 2375 / 519

Let's proceed to step 7:
519 goes into 2375 4 times with a remainder of 299.
Record the quotient 4 as the next digit in the result. 
Result so far: 7824.0
Subtract 2076 from 2375 to get 299.
Bring next digit (0) of the dividend behind the 299 and repeat the process: 2990 / 519

Step 8:
When dividing 2990 by 519, we get 5 with a remainder of 395.
The next digit of our result is 5. 
Result so far: 78245.0
Subtract 2595 from 2990 to get 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

On to step 9:
3950 divided by 519 is 7 with a remainder of 317.
Record the quotient 7 as the next digit in the result. 
Result so far: 78245.7
If we subtract 3633 from 3950, we get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Step 10:
519 can be fit into 3170 6 times, resulting in a remainder of 56.
The next digit of our result is 6. 
Result so far: 78245.76
Deduct 3114 from 3170 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 11:
519 can be fit into 560 1 times, resulting in a remainder of 41.
The number 1 becomes the next digit in our result. 
Result so far: 78245.761
The remainder is 41 after subtracting 519 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 12:
The number 519 fits into 410 0 times, leaving a remainder of 410.
Write down 0 as next digit of the result. 
Result so far: 78245.761
The remainder is 410 after subtracting 0 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Going ahead to step 13:
519 can be fit into 4100 7 times, resulting in a remainder of 467.
Use 7 as the next digit of our solution. 
Result so far: 78245.76107
Subtract 3633 from 4100 to get 467.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4670, and continue the process.

Let's proceed to step 14:
519 can be fit into 4670 8 times, resulting in a remainder of 518.
The next digit of our result is 8. 
Result so far: 78245.761078
Deduct 4152 from 4670 and we're left with 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Moving on to step 15:
When dividing 5180 by 519, we get 9 with a remainder of 509.
The next digit of our result is 9. 
Result so far: 78245.7610789
If we take 4671 away from 5180, we end up with 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

On to step 16:
519 can be fit into 5090 9 times, resulting in a remainder of 419.
Record the quotient 9 as the next digit in the result. 
Result so far: 78245.76107899
If we subtract 4671 from 5090, we get 419.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

The final result is 78245.76107899 with a remainder of 4.19e-07.