5754492 ÷ 666 
The aim is to understand the frequency of 666 in 5754492.

Step 1:
The number 666 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 666

Going ahead to step 2:
666 goes into 57 0 times with a remainder of 57.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 57, we end up with 57.
Grab the next digit (5) from the dividend, add it to 57, then carry on: 575 / 666

Advancing to step 3:
666 goes into 575 0 times with a remainder of 575.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 575 leaves us with 575.
Include the next digit (4) from the dividend after 575, then repeat: 5754 / 666

On to step 4:
666 can be fit into 5754 8 times, resulting in a remainder of 426.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 5328 from 5754 to get 426.
Append the next digit (4) from the dividend to 426 and continue with: 4264 / 666

Moving on to step 5:
The number 666 fits into 4264 6 times, leaving a remainder of 268.
Put 6 as the next digit of the answer. 
Result so far: 86.0
Subtracting 3996 from 4264 leaves us with 268.
Include the next digit (9) from the dividend after 268, then repeat: 2689 / 666

On to step 6:
If we divide 2689 by 666, we get 4 and a remainder of 25.
The number 4 becomes the next digit in our result. 
Result so far: 864.0
The remainder is 25 after subtracting 2664 from 2689.
Bring next digit (2) of the dividend behind the 25 and repeat the process: 252 / 666

On to step 7:
When dividing 252 by 666, we get 0 with a remainder of 252.
Use 0 as the next digit of our solution. 
Result so far: 8640.0
Subtract 0 from 252 to get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

On to step 8:
When dividing 2520 by 666, we get 3 with a remainder of 522.
Put 3 as the next digit of the answer. 
Result so far: 8640.3
The remainder is 522 after subtracting 1998 from 2520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Moving on to step 9:
When dividing 5220 by 666, we get 7 with a remainder of 558.
Write down 7 as next digit of the result. 
Result so far: 8640.37
Deduct 4662 from 5220 and we're left with 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Advancing to step 10:
666 can be fit into 5580 8 times, resulting in a remainder of 252.
Use 8 as the next digit of our solution. 
Result so far: 8640.378
If we take 5328 away from 5580, we end up with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Moving on to step 11:
When dividing 2520 by 666, we get 3 with a remainder of 522.
The number 3 becomes the next digit in our result. 
Result so far: 8640.3783
Subtracting 1998 from 2520 leaves us with 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Let's proceed to step 12:
666 can be fit into 5220 7 times, resulting in a remainder of 558.
Use 7 as the next digit of our solution. 
Result so far: 8640.37837
Deduct 4662 from 5220 and we're left with 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

On to step 13:
If we divide 5580 by 666, we get 8 and a remainder of 252.
The next digit of our result is 8. 
Result so far: 8640.378378
Deduct 5328 from 5580 and we're left with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Step 14:
666 can be fit into 2520 3 times, resulting in a remainder of 522.
Use 3 as the next digit of our solution. 
Result so far: 8640.3783783
If we take 1998 away from 2520, we end up with 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Advancing to step 15:
5220 divided by 666 is 7 with a remainder of 558.
Use 7 as the next digit of our solution. 
Result so far: 8640.37837837
Subtracting 4662 from 5220 leaves us with 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

The quotient of the division is 8640.37837837, and the remainder is 5.58e-07.