Let's divide 90894144 by 665
The aim is to understand the frequency of 665 in 90894144.

On to step 1:
When dividing 9 by 665, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 665

Going ahead to step 2:
665 goes into 90 0 times 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.
Fetch the next digit (8) from the dividend, attach it to 90 and continue: 908 / 665

On to step 3:
665 can be fit into 908 1 times, resulting in a remainder of 243.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 665 from 908 leaves us with 243.
Include the next digit (9) from the dividend after 243, then repeat: 2439 / 665

On to step 4:
When dividing 2439 by 665, we get 3 with a remainder of 444.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we subtract 1995 from 2439, we get 444.
Fetch the next digit (4) from the dividend, attach it to 444 and continue: 4444 / 665

Advancing to step 5:
665 can be fit into 4444 6 times, resulting in a remainder of 454.
Write down 6 as next digit of the result. 
Result so far: 136.0
Deduct 3990 from 4444 and we're left with 454.
Grab the next digit (1) from the dividend, add it to 454, then carry on: 4541 / 665

Moving on to step 6:
When dividing 4541 by 665, we get 6 with a remainder of 551.
Write down 6 as next digit of the result. 
Result so far: 1366.0
If we subtract 3990 from 4541, we get 551.
Grab the next digit (4) from the dividend, add it to 551, then carry on: 5514 / 665

Advancing to step 7:
When dividing 5514 by 665, we get 8 with a remainder of 194.
The next digit of our result is 8. 
Result so far: 13668.0
Deduct 5320 from 5514 and we're left with 194.
Grab the next digit (4) from the dividend, add it to 194, then carry on: 1944 / 665

Step 8:
When dividing 1944 by 665, we get 2 with a remainder of 614.
Put 2 as the next digit of the answer. 
Result so far: 136682.0
Deduct 1330 from 1944 and we're left with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Moving on to step 9:
665 goes into 6140 9 times with a remainder of 155.
Write down 9 as next digit of the result. 
Result so far: 136682.9
Subtract 5985 from 6140 to get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Let's proceed to step 10:
If we divide 1550 by 665, we get 2 and a remainder of 220.
Use 2 as the next digit of our solution. 
Result so far: 136682.92
If we subtract 1330 from 1550, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 11:
665 can be fit into 2200 3 times, resulting in a remainder of 205.
The next digit of our result is 3. 
Result so far: 136682.923
If we take 1995 away from 2200, we end up with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Going ahead to step 12:
665 goes into 2050 3 times with a remainder of 55.
Record the quotient 3 as the next digit in the result. 
Result so far: 136682.9233
Subtract 1995 from 2050 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

After the division, we end up with 136682.9233 and a remainder of 0.00055.