We look at the division of 90584299 by 666 
The aim is to understand the frequency of 666 in 90584299.

Let's proceed to step 1:
9 divided by 666 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 666

Advancing to step 2:
666 can be fit into 90 0 times, resulting in a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Fetch the next digit (5) from the dividend, attach it to 90 and continue: 905 / 666

Let's proceed to step 3:
666 can be fit into 905 1 times, resulting in a remainder of 239.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 666 from 905 and we're left with 239.
Take the next digit (8) from the dividend and append it to 239, then repeat: 2398 / 666

Going ahead to step 4:
If we divide 2398 by 666, we get 3 and a remainder of 400.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 400 after subtracting 1998 from 2398.
Bring next digit (4) of the dividend behind the 400 and repeat the process: 4004 / 666

Step 5:
The number 666 fits into 4004 6 times, leaving a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 136.0
If we subtract 3996 from 4004, we get 8.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 666

Going ahead to step 6:
If we divide 82 by 666, we get 0 and a remainder of 82.
The number 0 becomes the next digit in our result. 
Result so far: 1360.0
Subtract 0 from 82 to get 82.
Take the next digit (9) from the dividend and append it to 82, then repeat: 829 / 666

Advancing to step 7:
666 can be fit into 829 1 times, resulting in a remainder of 163.
Put 1 as the next digit of the answer. 
Result so far: 13601.0
If we take 666 away from 829, we end up with 163.
Take the next digit (9) from the dividend and append it to 163, then repeat: 1639 / 666

On to step 8:
666 can be fit into 1639 2 times, resulting in a remainder of 307.
Record the quotient 2 as the next digit in the result. 
Result so far: 136012.0
If we take 1332 away from 1639, we end up with 307.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

Going ahead to step 9:
666 can be fit into 3070 4 times, resulting in a remainder of 406.
Record the quotient 4 as the next digit in the result. 
Result so far: 136012.4
The remainder is 406 after subtracting 2664 from 3070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Advancing to step 10:
If we divide 4060 by 666, we get 6 and a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 136012.46
If we subtract 3996 from 4060, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 11:
If we divide 640 by 666, we get 0 and a remainder of 640.
Write down 0 as next digit of the result. 
Result so far: 136012.46
If we subtract 0 from 640, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

On to step 12:
When dividing 6400 by 666, we get 9 with a remainder of 406.
Write down 9 as next digit of the result. 
Result so far: 136012.4609
The remainder is 406 after subtracting 5994 from 6400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Let's proceed to step 13:
If we divide 4060 by 666, we get 6 and a remainder of 64.
The next digit of our result is 6. 
Result so far: 136012.46096
Deduct 3996 from 4060 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 14:
640 divided by 666 is 0 with a remainder of 640.
The next digit of our result is 0. 
Result so far: 136012.46096
If we subtract 0 from 640, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

On to step 15:
If we divide 6400 by 666, we get 9 and a remainder of 406.
The next digit of our result is 9. 
Result so far: 136012.4609609
The remainder is 406 after subtracting 5994 from 6400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Moving on to step 16:
The number 666 fits into 4060 6 times, leaving a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 136012.46096096
Deduct 3996 from 4060 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Our division results in 136012.46096096 with a remaining 6.4e-08.