54639473 ÷ 66 
The aim is to understand the frequency of 66 in 54639473.

Let's proceed to step 1:
5 divided by 66 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 66

Going ahead to step 2:
66 can be fit into 54 0 times, resulting in a remainder of 54.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 54 and we're left with 54.
Take the next digit (6) from the dividend and append it to 54, then repeat: 546 / 66

On to step 3:
66 goes into 546 8 times with a remainder of 18.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 18 after subtracting 528 from 546.
Fetch the next digit (3) from the dividend, attach it to 18 and continue: 183 / 66

Let's proceed to step 4:
The number 66 fits into 183 2 times, leaving a remainder of 51.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
If we take 132 away from 183, we end up with 51.
Fetch the next digit (9) from the dividend, attach it to 51 and continue: 519 / 66

Moving on to step 5:
66 goes into 519 7 times with a remainder of 57.
Write down 7 as next digit of the result. 
Result so far: 827.0
Deduct 462 from 519 and we're left with 57.
Grab the next digit (4) from the dividend, add it to 57, then carry on: 574 / 66

Moving on to step 6:
574 divided by 66 is 8 with a remainder of 46.
Put 8 as the next digit of the answer. 
Result so far: 8278.0
The remainder is 46 after subtracting 528 from 574.
Include the next digit (7) from the dividend after 46, then repeat: 467 / 66

Let's proceed to step 7:
The number 66 fits into 467 7 times, leaving a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 82787.0
If we subtract 462 from 467, we get 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 66

Moving on to step 8:
66 can be fit into 53 0 times, resulting in a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 827870.0
Subtracting 0 from 53 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 9:
When dividing 530 by 66, we get 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 827870.8
If we subtract 528 from 530, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
66 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 827870.8
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
66 goes into 200 3 times with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 827870.803
The remainder is 2 after subtracting 198 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 12:
When dividing 20 by 66, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 827870.803
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 13:
200 divided by 66 is 3 with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 827870.80303
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 14:
66 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 827870.80303
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 15:
When dividing 200 by 66, we get 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 827870.8030303
The remainder is 2 after subtracting 198 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 16:
If we divide 20 by 66, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 827870.8030303
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 827870.8030303, with a leftover of 2e-08.