72388380 ÷ 640 
The aim is to understand the frequency of 640 in 72388380.

Advancing to step 1:
640 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 640

Step 2:
72 divided by 640 is 0 with a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Fetch the next digit (3) from the dividend, attach it to 72 and continue: 723 / 640

Let's proceed to step 3:
When dividing 723 by 640, we get 1 with a remainder of 83.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 640 from 723 to get 83.
Include the next digit (8) from the dividend after 83, then repeat: 838 / 640

Step 4:
640 can be fit into 838 1 times, resulting in a remainder of 198.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtracting 640 from 838 leaves us with 198.
Bring next digit (8) of the dividend behind the 198 and repeat the process: 1988 / 640

Let's proceed to step 5:
If we divide 1988 by 640, we get 3 and a remainder of 68.
Use 3 as the next digit of our solution. 
Result so far: 113.0
The remainder is 68 after subtracting 1920 from 1988.
Append the next digit (3) from the dividend to 68 and continue with: 683 / 640

Step 6:
640 goes into 683 1 times with a remainder of 43.
Use 1 as the next digit of our solution. 
Result so far: 1131.0
The remainder is 43 after subtracting 640 from 683.
Fetch the next digit (8) from the dividend, attach it to 43 and continue: 438 / 640

Advancing to step 7:
The number 640 fits into 438 0 times, leaving a remainder of 438.
Record the quotient 0 as the next digit in the result. 
Result so far: 11310.0
Subtract 0 from 438 to get 438.
Fetch the next digit (0) from the dividend, attach it to 438 and continue: 4380 / 640

Moving on to step 8:
640 goes into 4380 6 times with a remainder of 540.
Use 6 as the next digit of our solution. 
Result so far: 113106.0
Deduct 3840 from 4380 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Moving on to step 9:
The number 640 fits into 5400 8 times, leaving a remainder of 280.
The number 8 becomes the next digit in our result. 
Result so far: 113106.8
If we subtract 5120 from 5400, we get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 10:
If we divide 2800 by 640, we get 4 and a remainder of 240.
Put 4 as the next digit of the answer. 
Result so far: 113106.84
Subtract 2560 from 2800 to get 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 11:
640 can be fit into 2400 3 times, resulting in a remainder of 480.
Put 3 as the next digit of the answer. 
Result so far: 113106.843
Subtracting 1920 from 2400 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 12:
The number 640 fits into 4800 7 times, leaving a remainder of 320.
Record the quotient 7 as the next digit in the result. 
Result so far: 113106.8437
Subtract 4480 from 4800 to 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.

Moving on to step 13:
When dividing 3200 by 640, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 113106.84375
If we take 3200 away from 3200, we end up 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.

Step 14:
When dividing 0 by 640, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 113106.84375
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.

Let's proceed to step 15:
0 divided by 640 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 113106.84375
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.

The final result is 113106.84375 with a remainder of 0.0.