66916670 divided by 522 
The aim is to understand the frequency of 522 in 66916670.

Advancing to step 1:
522 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 522

Going ahead to step 2:
66 divided by 522 is 0 with a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 522

On to step 3:
522 goes into 669 1 times with a remainder of 147.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 522 from 669, we get 147.
Bring next digit (1) of the dividend behind the 147 and repeat the process: 1471 / 522

Going ahead to step 4:
If we divide 1471 by 522, we get 2 and a remainder of 427.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 1044 away from 1471, we end up with 427.
Grab the next digit (6) from the dividend, add it to 427, then carry on: 4276 / 522

On to step 5:
522 can be fit into 4276 8 times, resulting in a remainder of 100.
The next digit of our result is 8. 
Result so far: 128.0
The remainder is 100 after subtracting 4176 from 4276.
Bring next digit (6) of the dividend behind the 100 and repeat the process: 1006 / 522

Let's proceed to step 6:
When dividing 1006 by 522, we get 1 with a remainder of 484.
The number 1 becomes the next digit in our result. 
Result so far: 1281.0
Subtract 522 from 1006 to get 484.
Take the next digit (7) from the dividend and append it to 484, then repeat: 4847 / 522

On to step 7:
If we divide 4847 by 522, we get 9 and a remainder of 149.
Record the quotient 9 as the next digit in the result. 
Result so far: 12819.0
If we subtract 4698 from 4847, we get 149.
Bring next digit (0) of the dividend behind the 149 and repeat the process: 1490 / 522

Let's proceed to step 8:
522 can be fit into 1490 2 times, resulting in a remainder of 446.
Put 2 as the next digit of the answer. 
Result so far: 128192.0
If we subtract 1044 from 1490, we get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Moving on to step 9:
The number 522 fits into 4460 8 times, leaving a remainder of 284.
Use 8 as the next digit of our solution. 
Result so far: 128192.8
The remainder is 284 after subtracting 4176 from 4460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Advancing to step 10:
When dividing 2840 by 522, we get 5 with a remainder of 230.
The next digit of our result is 5. 
Result so far: 128192.85
Subtract 2610 from 2840 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 11:
2300 divided by 522 is 4 with a remainder of 212.
Use 4 as the next digit of our solution. 
Result so far: 128192.854
Subtract 2088 from 2300 to get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Going ahead to step 12:
522 goes into 2120 4 times with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 128192.8544
If we take 2088 away from 2120, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Our division results in 128192.8544 with a remaining 0.00032.