147990 ÷ 66 
The aim is to understand the frequency of 66 in 147990.

Step 1:
If we divide 1 by 66, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 66

Step 2:
If we divide 14 by 66, we get 0 and a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 14 after subtracting 0 from 14.
Bring next digit (7) of the dividend behind the 14 and repeat the process: 147 / 66

Going ahead to step 3:
66 goes into 147 2 times with a remainder of 15.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 132 from 147 to get 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 66

Step 4:
66 goes into 159 2 times with a remainder of 27.
Write down 2 as next digit of the result. 
Result so far: 22.0
Deduct 132 from 159 and we're left with 27.
Bring next digit (9) of the dividend behind the 27 and repeat the process: 279 / 66

Moving on to step 5:
66 can be fit into 279 4 times, resulting in a remainder of 15.
The next digit of our result is 4. 
Result so far: 224.0
Subtracting 264 from 279 leaves us with 15.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 66

Going ahead to step 6:
150 divided by 66 is 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 2242.0
The remainder is 18 after subtracting 132 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 7:
180 divided by 66 is 2 with a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 2242.2
If we subtract 132 from 180, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 8:
The number 66 fits into 480 7 times, leaving a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 2242.27
Subtracting 462 from 480 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 9:
The number 66 fits into 180 2 times, leaving a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 2242.272
If we subtract 132 from 180, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 10:
480 divided by 66 is 7 with a remainder of 18.
Record the quotient 7 as the next digit in the result. 
Result so far: 2242.2727
The remainder is 18 after subtracting 462 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 11:
When dividing 180 by 66, we get 2 with a remainder of 48.
The next digit of our result is 2. 
Result so far: 2242.27272
Deduct 132 from 180 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 12:
66 goes into 480 7 times with a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 2242.272727
Subtracting 462 from 480 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 13:
When dividing 180 by 66, we get 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 2242.2727272
If we subtract 132 from 180, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 14:
66 can be fit into 480 7 times, resulting in a remainder of 18.
The number 7 becomes the next digit in our result. 
Result so far: 2242.27272727
Subtracting 462 from 480 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 2242.27272727 with a remaining 1.8e-08.