We're dividing 33016008 by 521 
The aim is to understand the frequency of 521 in 33016008.

On to step 1:
If we divide 3 by 521, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 521

On to step 2:
521 can be fit into 33 0 times, resulting in a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 33 after subtracting 0 from 33.
Include the next digit (0) from the dividend after 33, then repeat: 330 / 521

Step 3:
521 goes into 330 0 times with a remainder of 330.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 330 and we're left with 330.
Bring next digit (1) of the dividend behind the 330 and repeat the process: 3301 / 521

Let's proceed to step 4:
521 can be fit into 3301 6 times, resulting in a remainder of 175.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 3126 from 3301, we get 175.
Fetch the next digit (6) from the dividend, attach it to 175 and continue: 1756 / 521

Let's proceed to step 5:
The number 521 fits into 1756 3 times, leaving a remainder of 193.
Put 3 as the next digit of the answer. 
Result so far: 63.0
If we take 1563 away from 1756, we end up with 193.
Include the next digit (0) from the dividend after 193, then repeat: 1930 / 521

Step 6:
521 goes into 1930 3 times with a remainder of 367.
The next digit of our result is 3. 
Result so far: 633.0
Subtracting 1563 from 1930 leaves us with 367.
Take the next digit (0) from the dividend and append it to 367, then repeat: 3670 / 521

Let's proceed to step 7:
If we divide 3670 by 521, we get 7 and a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 6337.0
If we subtract 3647 from 3670, we get 23.
Take the next digit (8) from the dividend and append it to 23, then repeat: 238 / 521

On to step 8:
When dividing 238 by 521, we get 0 with a remainder of 238.
Use 0 as the next digit of our solution. 
Result so far: 63370.0
The remainder is 238 after subtracting 0 from 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 9:
521 can be fit into 2380 4 times, resulting in a remainder of 296.
Use 4 as the next digit of our solution. 
Result so far: 63370.4
The remainder is 296 after subtracting 2084 from 2380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Moving on to step 10:
The number 521 fits into 2960 5 times, leaving a remainder of 355.
The next digit of our result is 5. 
Result so far: 63370.45
The remainder is 355 after subtracting 2605 from 2960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Step 11:
3550 divided by 521 is 6 with a remainder of 424.
Use 6 as the next digit of our solution. 
Result so far: 63370.456
Deduct 3126 from 3550 and we're left with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Going ahead to step 12:
521 can be fit into 4240 8 times, resulting in a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 63370.4568
If we take 4168 away from 4240, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 13:
521 goes into 720 1 times with a remainder of 199.
The next digit of our result is 1. 
Result so far: 63370.45681
Subtracting 521 from 720 leaves us 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 14:
If we divide 1990 by 521, we get 3 and a remainder of 427.
Put 3 as the next digit of the answer. 
Result so far: 63370.456813
Deduct 1563 from 1990 and we're left with 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Moving on to step 15:
521 can be fit into 4270 8 times, resulting in a remainder of 102.
Write down 8 as next digit of the result. 
Result so far: 63370.4568138
If we take 4168 away from 4270, we end up with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Advancing to step 16:
When dividing 1020 by 521, we get 1 with a remainder of 499.
Use 1 as the next digit of our solution. 
Result so far: 63370.45681381
If we take 521 away from 1020, we end up with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

In conclusion, the division gives 63370.45681381 with a balance of 4.99e-07.