90225414 divided by 664 
The aim is to understand the frequency of 664 in 90225414.

Moving on to step 1:
If we divide 9 by 664, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 664

Let's proceed to step 2:
When dividing 90 by 664, we get 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Append the next digit (2) from the dividend to 90 and continue with: 902 / 664

Advancing to step 3:
664 can be fit into 902 1 times, resulting in a remainder of 238.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 664 from 902 and we're left with 238.
Include the next digit (2) from the dividend after 238, then repeat: 2382 / 664

Going ahead to step 4:
664 goes into 2382 3 times with a remainder of 390.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 1992 from 2382 to get 390.
Append the next digit (5) from the dividend to 390 and continue with: 3905 / 664

Step 5:
If we divide 3905 by 664, we get 5 and a remainder of 585.
The next digit of our result is 5. 
Result so far: 135.0
The remainder is 585 after subtracting 3320 from 3905.
Take the next digit (4) from the dividend and append it to 585, then repeat: 5854 / 664

On to step 6:
664 goes into 5854 8 times with a remainder of 542.
Write down 8 as next digit of the result. 
Result so far: 1358.0
Subtracting 5312 from 5854 leaves us with 542.
Bring next digit (1) of the dividend behind the 542 and repeat the process: 5421 / 664

Advancing to step 7:
664 goes into 5421 8 times with a remainder of 109.
Record the quotient 8 as the next digit in the result. 
Result so far: 13588.0
The remainder is 109 after subtracting 5312 from 5421.
Bring next digit (4) of the dividend behind the 109 and repeat the process: 1094 / 664

Advancing to step 8:
The number 664 fits into 1094 1 times, leaving a remainder of 430.
Use 1 as the next digit of our solution. 
Result so far: 135881.0
Deduct 664 from 1094 and we're left with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Step 9:
When dividing 4300 by 664, we get 6 with a remainder of 316.
Record the quotient 6 as the next digit in the result. 
Result so far: 135881.6
Subtract 3984 from 4300 to get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Step 10:
664 can be fit into 3160 4 times, resulting in a remainder of 504.
Put 4 as the next digit of the answer. 
Result so far: 135881.64
Deduct 2656 from 3160 and we're left with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Step 11:
664 can be fit into 5040 7 times, resulting in a remainder of 392.
The number 7 becomes the next digit in our result. 
Result so far: 135881.647
Subtract 4648 from 5040 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 12:
664 goes into 3920 5 times with a remainder of 600.
Put 5 as the next digit of the answer. 
Result so far: 135881.6475
If we subtract 3320 from 3920, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 13:
664 can be fit into 6000 9 times, resulting in a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 135881.64759
The remainder is 24 after subtracting 5976 from 6000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 14:
When dividing 240 by 664, we get 0 with a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 135881.64759
If we take 0 away from 240, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 15:
2400 divided by 664 is 3 with a remainder of 408.
Put 3 as the next digit of the answer. 
Result so far: 135881.6475903
Subtract 1992 from 2400 to get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

On to step 16:
664 can be fit into 4080 6 times, resulting in a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 135881.64759036
Deduct 3984 from 4080 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

After the division, we end up with 135881.64759036 and a remainder of 9.6e-08.