We divide 31315080 by 640
The aim is to understand the frequency of 640 in 31315080.

Step 1:
When dividing 3 by 640, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 640

Going ahead to step 2:
When dividing 31 by 640, we get 0 with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Fetch the next digit (3) from the dividend, attach it to 31 and continue: 313 / 640

Let's proceed to step 3:
If we divide 313 by 640, we get 0 and a remainder of 313.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 313 leaves us with 313.
Append the next digit (1) from the dividend to 313 and continue with: 3131 / 640

Let's proceed to step 4:
640 can be fit into 3131 4 times, resulting in a remainder of 571.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 2560 from 3131, we get 571.
Fetch the next digit (5) from the dividend, attach it to 571 and continue: 5715 / 640

Advancing to step 5:
When dividing 5715 by 640, we get 8 with a remainder of 595.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
Subtracting 5120 from 5715 leaves us with 595.
Include the next digit (0) from the dividend after 595, then repeat: 5950 / 640

Going ahead to step 6:
If we divide 5950 by 640, we get 9 and a remainder of 190.
Record the quotient 9 as the next digit in the result. 
Result so far: 489.0
Subtract 5760 from 5950 to get 190.
Bring next digit (8) of the dividend behind the 190 and repeat the process: 1908 / 640

Step 7:
640 goes into 1908 2 times with a remainder of 628.
The next digit of our result is 2. 
Result so far: 4892.0
If we subtract 1280 from 1908, we get 628.
Bring next digit (0) of the dividend behind the 628 and repeat the process: 6280 / 640

Going ahead to step 8:
If we divide 6280 by 640, we get 9 and a remainder of 520.
The next digit of our result is 9. 
Result so far: 48929.0
If we subtract 5760 from 6280, we get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Going ahead to step 9:
When dividing 5200 by 640, we get 8 with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 48929.8
If we subtract 5120 from 5200, we get 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 10:
The number 640 fits into 800 1 times, leaving a remainder of 160.
Use 1 as the next digit of our solution. 
Result so far: 48929.81
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.

Step 11:
If we divide 1600 by 640, we get 2 and a remainder of 320.
Put 2 as the next digit of the answer. 
Result so far: 48929.812
If we subtract 1280 from 1600, we get 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 12:
The number 640 fits into 3200 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 48929.8125
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.

Advancing to step 13:
0 divided by 640 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 48929.8125
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 14:
0 divided by 640 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 48929.8125
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 48929.8125 with a remaining 0.0.