169988 ÷ 66 
The aim is to understand the frequency of 66 in 169988.

Advancing to step 1:
The number 66 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 66

Let's proceed to step 2:
If we divide 16 by 66, we get 0 and a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 66

Going ahead to step 3:
The number 66 fits into 169 2 times, leaving a remainder of 37.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 132 from 169 leaves us with 37.
Bring next digit (9) of the dividend behind the 37 and repeat the process: 379 / 66

Moving on to step 4:
When dividing 379 by 66, we get 5 with a remainder of 49.
Write down 5 as next digit of the result. 
Result so far: 25.0
Subtracting 330 from 379 leaves us with 49.
Fetch the next digit (8) from the dividend, attach it to 49 and continue: 498 / 66

On to step 5:
When dividing 498 by 66, we get 7 with a remainder of 36.
Use 7 as the next digit of our solution. 
Result so far: 257.0
Subtracting 462 from 498 leaves us with 36.
Take the next digit (8) from the dividend and append it to 36, then repeat: 368 / 66

Step 6:
The number 66 fits into 368 5 times, leaving a remainder of 38.
Record the quotient 5 as the next digit in the result. 
Result so far: 2575.0
Subtract 330 from 368 to 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.

Advancing to step 7:
66 goes into 380 5 times with a remainder of 50.
The next digit of our result is 5. 
Result so far: 2575.5
Subtracting 330 from 380 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 8:
500 divided by 66 is 7 with a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 2575.57
Subtract 462 from 500 to 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.

Step 9:
66 goes into 380 5 times with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 2575.575
The remainder is 50 after subtracting 330 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 10:
The number 66 fits into 500 7 times, leaving a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 2575.5757
Subtracting 462 from 500 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.

Moving on to step 11:
If we divide 380 by 66, we get 5 and a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 2575.57575
Subtracting 330 from 380 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 12:
66 goes into 500 7 times with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 2575.575757
The remainder is 38 after subtracting 462 from 500.
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 13:
66 goes into 380 5 times with a remainder of 50.
The next digit of our result is 5. 
Result so far: 2575.5757575
Subtract 330 from 380 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 14:
66 goes into 500 7 times with a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 2575.57575757
Subtracting 462 from 500 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.

Our division results in 2575.57575757 with a remaining 3.8e-08.