3098285 divided by 640 
The aim is to understand the frequency of 640 in 3098285.

Moving on to step 1:
If we divide 3 by 640, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 640

Going ahead to step 2:
30 divided by 640 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Take the next digit (9) from the dividend and append it to 30, then repeat: 309 / 640

Moving on to step 3:
If we divide 309 by 640, we get 0 and a remainder of 309.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 309, we get 309.
Append the next digit (8) from the dividend to 309 and continue with: 3098 / 640

On to step 4:
640 can be fit into 3098 4 times, resulting in a remainder of 538.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 2560 from 3098 leaves us with 538.
Bring next digit (2) of the dividend behind the 538 and repeat the process: 5382 / 640

Let's proceed to step 5:
640 can be fit into 5382 8 times, resulting in a remainder of 262.
Write down 8 as next digit of the result. 
Result so far: 48.0
If we take 5120 away from 5382, we end up with 262.
Include the next digit (8) from the dividend after 262, then repeat: 2628 / 640

Going ahead to step 6:
If we divide 2628 by 640, we get 4 and a remainder of 68.
Use 4 as the next digit of our solution. 
Result so far: 484.0
The remainder is 68 after subtracting 2560 from 2628.
Append the next digit (5) from the dividend to 68 and continue with: 685 / 640

Going ahead to step 7:
685 divided by 640 is 1 with a remainder of 45.
The number 1 becomes the next digit in our result. 
Result so far: 4841.0
Subtract 640 from 685 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 8:
The number 640 fits into 450 0 times, leaving a remainder of 450.
Write down 0 as next digit of the result. 
Result so far: 4841.0
If we take 0 away from 450, we end up with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Going ahead to step 9:
640 can be fit into 4500 7 times, resulting in a remainder of 20.
Record the quotient 7 as the next digit in the result. 
Result so far: 4841.07
If we take 4480 away from 4500, 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.

On to step 10:
640 can be fit into 200 0 times, resulting in a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 4841.07
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 11:
If we divide 2000 by 640, we get 3 and a remainder of 80.
Put 3 as the next digit of the answer. 
Result so far: 4841.0703
If we take 1920 away from 2000, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 12:
800 divided by 640 is 1 with a remainder of 160.
Use 1 as the next digit of our solution. 
Result so far: 4841.07031
The remainder is 160 after subtracting 640 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 13:
1600 divided by 640 is 2 with a remainder of 320.
The number 2 becomes the next digit in our result. 
Result so far: 4841.070312
Deduct 1280 from 1600 and we're left with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 14:
If we divide 3200 by 640, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4841.0703125
The remainder is 0 after subtracting 3200 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 15:
640 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4841.0703125
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 4841.0703125 and a remainder of 0.0.