We look at the division of 3115880 by 528 
The aim is to understand the frequency of 528 in 3115880.

On to step 1:
When dividing 3 by 528, we get 0 with 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 (1) of the dividend behind the 3 and repeat the process: 31 / 528

Advancing to step 2:
528 can be fit into 31 0 times, resulting in a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Take the next digit (1) from the dividend and append it to 31, then repeat: 311 / 528

Moving on to step 3:
528 goes into 311 0 times with a remainder of 311.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 311 to get 311.
Bring next digit (5) of the dividend behind the 311 and repeat the process: 3115 / 528

Step 4:
528 can be fit into 3115 5 times, resulting in a remainder of 475.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 475 after subtracting 2640 from 3115.
Fetch the next digit (8) from the dividend, attach it to 475 and continue: 4758 / 528

Moving on to step 5:
When dividing 4758 by 528, we get 9 with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 59.0
If we subtract 4752 from 4758, we get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 528

Advancing to step 6:
528 can be fit into 68 0 times, resulting in a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 590.0
The remainder is 68 after subtracting 0 from 68.
Grab the next digit (0) from the dividend, add it to 68, then carry on: 680 / 528

Advancing to step 7:
528 goes into 680 1 times with a remainder of 152.
The number 1 becomes the next digit in our result. 
Result so far: 5901.0
If we subtract 528 from 680, we get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Let's proceed to step 8:
528 goes into 1520 2 times with a remainder of 464.
Record the quotient 2 as the next digit in the result. 
Result so far: 5901.2
Subtract 1056 from 1520 to get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Step 9:
If we divide 4640 by 528, we get 8 and a remainder of 416.
Use 8 as the next digit of our solution. 
Result so far: 5901.28
The remainder is 416 after subtracting 4224 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Advancing to step 10:
528 can be fit into 4160 7 times, resulting in a remainder of 464.
Put 7 as the next digit of the answer. 
Result so far: 5901.287
If we take 3696 away from 4160, we end up with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Step 11:
The number 528 fits into 4640 8 times, leaving a remainder of 416.
The number 8 becomes the next digit in our result. 
Result so far: 5901.2878
The remainder is 416 after subtracting 4224 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Moving on to step 12:
When dividing 4160 by 528, we get 7 with a remainder of 464.
The next digit of our result is 7. 
Result so far: 5901.28787
If we take 3696 away from 4160, we end up with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Moving on to step 13:
528 goes into 4640 8 times with a remainder of 416.
The next digit of our result is 8. 
Result so far: 5901.287878
Subtracting 4224 from 4640 leaves us with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Step 14:
4160 divided by 528 is 7 with a remainder of 464.
The number 7 becomes the next digit in our result. 
Result so far: 5901.2878787
Deduct 3696 from 4160 and we're left with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Let's proceed to step 15:
The number 528 fits into 4640 8 times, leaving a remainder of 416.
The number 8 becomes the next digit in our result. 
Result so far: 5901.28787878
The remainder is 416 after subtracting 4224 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

The final result is 5901.28787878 with a remainder of 4.16e-07.