We look at the division of 76240323 by 409 
The aim is to understand the frequency of 409 in 76240323.

Step 1:
If we divide 7 by 409, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 409

Let's proceed to step 2:
409 can be fit into 76 0 times, resulting in a remainder of 76.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 76, we get 76.
Grab the next digit (2) from the dividend, add it to 76, then carry on: 762 / 409

Moving on to step 3:
409 can be fit into 762 1 times, resulting in a remainder of 353.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 409 away from 762, we end up with 353.
Include the next digit (4) from the dividend after 353, then repeat: 3534 / 409

Going ahead to step 4:
When dividing 3534 by 409, we get 8 with a remainder of 262.
Use 8 as the next digit of our solution. 
Result so far: 18.0
The remainder is 262 after subtracting 3272 from 3534.
Take the next digit (0) from the dividend and append it to 262, then repeat: 2620 / 409

Moving on to step 5:
If we divide 2620 by 409, we get 6 and a remainder of 166.
Write down 6 as next digit of the result. 
Result so far: 186.0
If we subtract 2454 from 2620, we get 166.
Fetch the next digit (3) from the dividend, attach it to 166 and continue: 1663 / 409

Moving on to step 6:
When dividing 1663 by 409, we get 4 with a remainder of 27.
Record the quotient 4 as the next digit in the result. 
Result so far: 1864.0
If we take 1636 away from 1663, we end up with 27.
Take the next digit (2) from the dividend and append it to 27, then repeat: 272 / 409

Let's proceed to step 7:
409 can be fit into 272 0 times, resulting in a remainder of 272.
The next digit of our result is 0. 
Result so far: 18640.0
Deduct 0 from 272 and we're left with 272.
Take the next digit (3) from the dividend and append it to 272, then repeat: 2723 / 409

Going ahead to step 8:
When dividing 2723 by 409, we get 6 with a remainder of 269.
Write down 6 as next digit of the result. 
Result so far: 186406.0
Deduct 2454 from 2723 and we're left with 269.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

Going ahead to step 9:
The number 409 fits into 2690 6 times, leaving a remainder of 236.
The number 6 becomes the next digit in our result. 
Result so far: 186406.6
If we subtract 2454 from 2690, we get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Moving on to step 10:
2360 divided by 409 is 5 with a remainder of 315.
Write down 5 as next digit of the result. 
Result so far: 186406.65
Subtract 2045 from 2360 to get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

On to step 11:
The number 409 fits into 3150 7 times, leaving a remainder of 287.
Put 7 as the next digit of the answer. 
Result so far: 186406.657
Deduct 2863 from 3150 and we're left with 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

On to step 12:
If we divide 2870 by 409, we get 7 and a remainder of 7.
The next digit of our result is 7. 
Result so far: 186406.6577
Subtract 2863 from 2870 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 186406.6577 with a balance of 7e-05.