We're dividing 66602249 by 66 
The aim is to understand the frequency of 66 in 66602249.

On to step 1:
When dividing 6 by 66, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 66

Advancing to step 2:
The number 66 fits into 66 1 times, leaving a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 66 from 66 and we're left with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 66

Let's proceed to step 3:
66 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 66

On to step 4:
66 can be fit into 60 0 times, resulting in a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 100.0
Subtract 0 from 60 to get 60.
Bring next digit (2) of the dividend behind the 60 and repeat the process: 602 / 66

Moving on to step 5:
The number 66 fits into 602 9 times, leaving a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 1009.0
If we take 594 away from 602, we end up with 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 66

Going ahead to step 6:
If we divide 82 by 66, we get 1 and a remainder of 16.
Record the quotient 1 as the next digit in the result. 
Result so far: 10091.0
Subtract 66 from 82 to get 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 66

On to step 7:
When dividing 164 by 66, we get 2 with a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 100912.0
Subtract 132 from 164 to get 32.
Bring next digit (9) of the dividend behind the 32 and repeat the process: 329 / 66

Step 8:
66 can be fit into 329 4 times, resulting in a remainder of 65.
Write down 4 as next digit of the result. 
Result so far: 1009124.0
Deduct 264 from 329 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Let's proceed to step 9:
66 goes into 650 9 times with a remainder of 56.
Use 9 as the next digit of our solution. 
Result so far: 1009124.9
If we subtract 594 from 650, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 10:
560 divided by 66 is 8 with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 1009124.98
The remainder is 32 after subtracting 528 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 11:
320 divided by 66 is 4 with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 1009124.984
Subtracting 264 from 320 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 12:
When dividing 560 by 66, we get 8 with a remainder of 32.
The next digit of our result is 8. 
Result so far: 1009124.9848
Subtract 528 from 560 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 13:
66 goes into 320 4 times with a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 1009124.98484
Subtracting 264 from 320 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 14:
66 goes into 560 8 times with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 1009124.984848
Subtracting 528 from 560 leaves us 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.

Moving on to step 15:
66 goes into 320 4 times with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 1009124.9848484
Subtracting 264 from 320 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 16:
66 goes into 560 8 times with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 1009124.98484848
Subtracting 528 from 560 leaves us 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.

After the division, we end up with 1009124.98484848 and a remainder of 3.2e-08.