We're dividing 640425 by 24 
The aim is to understand the frequency of 24 in 640425.

Going ahead to step 1:
24 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 24

Let's proceed to step 2:
If we divide 64 by 24, we get 2 and a remainder of 16.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 48 from 64 leaves us with 16.
Bring next digit (0) of the dividend behind the 16 and repeat the process: 160 / 24

On to step 3:
If we divide 160 by 24, we get 6 and a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 26.0
Subtracting 144 from 160 leaves us with 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 24

Going ahead to step 4:
If we divide 164 by 24, we get 6 and a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 266.0
Subtracting 144 from 164 leaves us with 20.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 24

Let's proceed to step 5:
24 can be fit into 202 8 times, resulting in a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 2668.0
If we subtract 192 from 202, we get 10.
Take the next digit (5) from the dividend and append it to 10, then repeat: 105 / 24

Moving on to step 6:
The number 24 fits into 105 4 times, leaving a remainder of 9.
Use 4 as the next digit of our solution. 
Result so far: 26684.0
Deduct 96 from 105 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
24 can be fit into 90 3 times, resulting in a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 26684.3
If we subtract 72 from 90, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 8:
If we divide 180 by 24, we get 7 and a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 26684.37
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
24 can be fit into 120 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 26684.375
Subtract 120 from 120 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.

On to step 10:
0 divided by 24 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 26684.375
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.

Going ahead to step 11:
24 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 26684.375
If we take 0 away from 0, 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.

The quotient of the division is 26684.375, and the remainder is 0.0.