We divide 96404315 by 521
The aim is to understand the frequency of 521 in 96404315.

Going ahead to step 1:
9 divided by 521 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 521

Moving on to step 2:
When dividing 96 by 521, we get 0 with a remainder of 96.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 96 after subtracting 0 from 96.
Bring next digit (4) of the dividend behind the 96 and repeat the process: 964 / 521

Step 3:
521 can be fit into 964 1 times, resulting in a remainder of 443.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 521 from 964, we get 443.
Bring next digit (0) of the dividend behind the 443 and repeat the process: 4430 / 521

Going ahead to step 4:
521 goes into 4430 8 times with a remainder of 262.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
Subtract 4168 from 4430 to get 262.
Include the next digit (4) from the dividend after 262, then repeat: 2624 / 521

Going ahead to step 5:
When dividing 2624 by 521, we get 5 with a remainder of 19.
Record the quotient 5 as the next digit in the result. 
Result so far: 185.0
The remainder is 19 after subtracting 2605 from 2624.
Include the next digit (3) from the dividend after 19, then repeat: 193 / 521

On to step 6:
521 goes into 193 0 times with a remainder of 193.
The number 0 becomes the next digit in our result. 
Result so far: 1850.0
If we subtract 0 from 193, we get 193.
Include the next digit (1) from the dividend after 193, then repeat: 1931 / 521

Advancing to step 7:
The number 521 fits into 1931 3 times, leaving a remainder of 368.
Put 3 as the next digit of the answer. 
Result so far: 18503.0
Subtracting 1563 from 1931 leaves us with 368.
Fetch the next digit (5) from the dividend, attach it to 368 and continue: 3685 / 521

Advancing to step 8:
521 can be fit into 3685 7 times, resulting in a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 185037.0
If we subtract 3647 from 3685, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 9:
When dividing 380 by 521, we get 0 with a remainder of 380.
Put 0 as the next digit of the answer. 
Result so far: 185037.0
Subtracting 0 from 380 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 10:
The number 521 fits into 3800 7 times, leaving a remainder of 153.
Put 7 as the next digit of the answer. 
Result so far: 185037.07
Subtracting 3647 from 3800 leaves us with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Going ahead to step 11:
1530 divided by 521 is 2 with a remainder of 488.
The number 2 becomes the next digit in our result. 
Result so far: 185037.072
Deduct 1042 from 1530 and we're left with 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Advancing to step 12:
4880 divided by 521 is 9 with a remainder of 191.
Put 9 as the next digit of the answer. 
Result so far: 185037.0729
Subtract 4689 from 4880 to get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Going ahead to step 13:
521 can be fit into 1910 3 times, resulting in a remainder of 347.
The number 3 becomes the next digit in our result. 
Result so far: 185037.07293
The remainder is 347 after subtracting 1563 from 1910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

Step 14:
The number 521 fits into 3470 6 times, leaving a remainder of 344.
Put 6 as the next digit of the answer. 
Result so far: 185037.072936
Subtracting 3126 from 3470 leaves us with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Moving on to step 15:
When dividing 3440 by 521, we get 6 with a remainder of 314.
The number 6 becomes the next digit in our result. 
Result so far: 185037.0729366
If we subtract 3126 from 3440, we get 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

The final outcome is 185037.0729366, with a leftover of 3.14e-06.