Let's divide 84390806 by 528
The aim is to understand the frequency of 528 in 84390806.

Step 1:
The number 528 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 528

Step 2:
84 divided by 528 is 0 with a remainder of 84.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Include the next digit (3) from the dividend after 84, then repeat: 843 / 528

Advancing to step 3:
When dividing 843 by 528, we get 1 with a remainder of 315.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 528 from 843 to get 315.
Grab the next digit (9) from the dividend, add it to 315, then carry on: 3159 / 528

Advancing to step 4:
If we divide 3159 by 528, we get 5 and a remainder of 519.
The next digit of our result is 5. 
Result so far: 15.0
The remainder is 519 after subtracting 2640 from 3159.
Grab the next digit (0) from the dividend, add it to 519, then carry on: 5190 / 528

On to step 5:
If we divide 5190 by 528, we get 9 and a remainder of 438.
The number 9 becomes the next digit in our result. 
Result so far: 159.0
Deduct 4752 from 5190 and we're left with 438.
Fetch the next digit (8) from the dividend, attach it to 438 and continue: 4388 / 528

Going ahead to step 6:
528 can be fit into 4388 8 times, resulting in a remainder of 164.
Put 8 as the next digit of the answer. 
Result so far: 1598.0
If we subtract 4224 from 4388, we get 164.
Take the next digit (0) from the dividend and append it to 164, then repeat: 1640 / 528

Moving on to step 7:
528 can be fit into 1640 3 times, resulting in a remainder of 56.
The next digit of our result is 3. 
Result so far: 15983.0
The remainder is 56 after subtracting 1584 from 1640.
Include the next digit (6) from the dividend after 56, then repeat: 566 / 528

Advancing to step 8:
When dividing 566 by 528, we get 1 with a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 159831.0
Subtracting 528 from 566 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 9:
If we divide 380 by 528, we get 0 and a remainder of 380.
The next digit of our result is 0. 
Result so far: 159831.0
Deduct 0 from 380 and we're left 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.

Let's proceed to step 10:
If we divide 3800 by 528, we get 7 and a remainder of 104.
Use 7 as the next digit of our solution. 
Result so far: 159831.07
If we take 3696 away from 3800, we end up with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Step 11:
The number 528 fits into 1040 1 times, leaving a remainder of 512.
Use 1 as the next digit of our solution. 
Result so far: 159831.071
Subtract 528 from 1040 to get 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

On to step 12:
528 can be fit into 5120 9 times, resulting in a remainder of 368.
Put 9 as the next digit of the answer. 
Result so far: 159831.0719
If we subtract 4752 from 5120, we get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Moving on to step 13:
528 goes into 3680 6 times with a remainder of 512.
Use 6 as the next digit of our solution. 
Result so far: 159831.07196
Deduct 3168 from 3680 and we're left with 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Moving on to step 14:
If we divide 5120 by 528, we get 9 and a remainder of 368.
Write down 9 as next digit of the result. 
Result so far: 159831.071969
Deduct 4752 from 5120 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

On to step 15:
If we divide 3680 by 528, we get 6 and a remainder of 512.
The number 6 becomes the next digit in our result. 
Result so far: 159831.0719696
Subtract 3168 from 3680 to get 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Step 16:
528 can be fit into 5120 9 times, resulting in a remainder of 368.
Use 9 as the next digit of our solution. 
Result so far: 159831.07196969
Subtract 4752 from 5120 to get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

The quotient of the division is 159831.07196969, and the remainder is 3.68e-07.