14908921 divided by 640 
The aim is to understand the frequency of 640 in 14908921.

Going ahead to step 1:
If we divide 1 by 640, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 640

Going ahead to step 2:
If we divide 14 by 640, we get 0 and a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 640

Step 3:
If we divide 149 by 640, we get 0 and a remainder of 149.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 149 and we're left with 149.
Append the next digit (0) from the dividend to 149 and continue with: 1490 / 640

Going ahead to step 4:
The number 640 fits into 1490 2 times, leaving a remainder of 210.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 1280 from 1490 leaves us with 210.
Append the next digit (8) from the dividend to 210 and continue with: 2108 / 640

Going ahead to step 5:
640 goes into 2108 3 times with a remainder of 188.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
The remainder is 188 after subtracting 1920 from 2108.
Include the next digit (9) from the dividend after 188, then repeat: 1889 / 640

Advancing to step 6:
640 can be fit into 1889 2 times, resulting in a remainder of 609.
The number 2 becomes the next digit in our result. 
Result so far: 232.0
Subtracting 1280 from 1889 leaves us with 609.
Include the next digit (2) from the dividend after 609, then repeat: 6092 / 640

Step 7:
If we divide 6092 by 640, we get 9 and a remainder of 332.
Use 9 as the next digit of our solution. 
Result so far: 2329.0
If we subtract 5760 from 6092, we get 332.
Append the next digit (1) from the dividend to 332 and continue with: 3321 / 640

On to step 8:
The number 640 fits into 3321 5 times, leaving a remainder of 121.
The next digit of our result is 5. 
Result so far: 23295.0
If we take 3200 away from 3321, we end up with 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Advancing to step 9:
1210 divided by 640 is 1 with a remainder of 570.
Record the quotient 1 as the next digit in the result. 
Result so far: 23295.1
Subtracting 640 from 1210 leaves us with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Step 10:
640 can be fit into 5700 8 times, resulting in a remainder of 580.
Record the quotient 8 as the next digit in the result. 
Result so far: 23295.18
Deduct 5120 from 5700 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Let's proceed to step 11:
If we divide 5800 by 640, we get 9 and a remainder of 40.
Write down 9 as next digit of the result. 
Result so far: 23295.189
Subtracting 5760 from 5800 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 12:
The number 640 fits into 400 0 times, leaving a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 23295.189
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 13:
640 can be fit into 4000 6 times, resulting in a remainder of 160.
Put 6 as the next digit of the answer. 
Result so far: 23295.18906
Deduct 3840 from 4000 and we're left with 160.
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 14:
The number 640 fits into 1600 2 times, leaving a remainder of 320.
Put 2 as the next digit of the answer. 
Result so far: 23295.189062
The remainder is 320 after subtracting 1280 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 15:
640 goes into 3200 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 23295.1890625
Subtracting 3200 from 3200 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.

On to step 16:
If we divide 0 by 640, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 23295.1890625
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 23295.1890625 with a remainder of 0.0.