Let's divide 16503 by 66
The aim is to understand the frequency of 66 in 16503.

Step 1:
When dividing 1 by 66, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 66

Advancing to step 2:
66 can be fit into 16 0 times, resulting in a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 16 leaves us with 16.
Fetch the next digit (5) from the dividend, attach it to 16 and continue: 165 / 66

Let's proceed to step 3:
66 can be fit into 165 2 times, resulting in a remainder of 33.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 33 after subtracting 132 from 165.
Append the next digit (0) from the dividend to 33 and continue with: 330 / 66

Step 4:
When dividing 330 by 66, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
Deduct 330 from 330 and we're left with 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 66

Let's proceed to step 5:
The number 66 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 250.0
If we subtract 0 from 3, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 6:
When dividing 30 by 66, we get 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 250.0
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 7:
300 divided by 66 is 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 250.04
If we take 264 away from 300, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 8:
The number 66 fits into 360 5 times, leaving a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 250.045
The remainder is 30 after subtracting 330 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
300 divided by 66 is 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 250.0454
The remainder is 36 after subtracting 264 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 10:
If we divide 360 by 66, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 250.04545
If we subtract 330 from 360, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 11:
If we divide 300 by 66, we get 4 and a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 250.045454
The remainder is 36 after subtracting 264 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 12:
The number 66 fits into 360 5 times, leaving a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 250.0454545
The remainder is 30 after subtracting 330 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 13:
66 goes into 300 4 times with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 250.04545454
If we subtract 264 from 300, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Our division results in 250.04545454 with a remaining 3.6e-08.