361680 divided by 66 
The aim is to understand the frequency of 66 in 361680.

Step 1:
If we divide 3 by 66, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 66

Advancing to step 2:
36 divided by 66 is 0 with a remainder of 36.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 36 after subtracting 0 from 36.
Fetch the next digit (1) from the dividend, attach it to 36 and continue: 361 / 66

On to step 3:
The number 66 fits into 361 5 times, leaving a remainder of 31.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 330 away from 361, we end up with 31.
Fetch the next digit (6) from the dividend, attach it to 31 and continue: 316 / 66

Step 4:
316 divided by 66 is 4 with a remainder of 52.
Use 4 as the next digit of our solution. 
Result so far: 54.0
Subtracting 264 from 316 leaves us with 52.
Take the next digit (8) from the dividend and append it to 52, then repeat: 528 / 66

Going ahead to step 5:
66 can be fit into 528 8 times, resulting in a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 548.0
Subtracting 528 from 528 leaves us with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 66

Advancing to step 6:
0 divided by 66 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 5480.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
If we divide 0 by 66, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 5480.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
66 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 5480.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 5480.0 and a remainder of 0.0.