Let's divide 24293866 by 644
The aim is to understand the frequency of 644 in 24293866.

Let's proceed to step 1:
644 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 644

Let's proceed to step 2:
644 can be fit into 24 0 times, resulting in a remainder of 24.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 24, we end up with 24.
Append the next digit (2) from the dividend to 24 and continue with: 242 / 644

Let's proceed to step 3:
644 goes into 242 0 times with a remainder of 242.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 242 to get 242.
Take the next digit (9) from the dividend and append it to 242, then repeat: 2429 / 644

On to step 4:
644 goes into 2429 3 times with a remainder of 497.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 1932 away from 2429, we end up with 497.
Include the next digit (3) from the dividend after 497, then repeat: 4973 / 644

Advancing to step 5:
When dividing 4973 by 644, we get 7 with a remainder of 465.
The next digit of our result is 7. 
Result so far: 37.0
If we take 4508 away from 4973, we end up with 465.
Fetch the next digit (8) from the dividend, attach it to 465 and continue: 4658 / 644

Let's proceed to step 6:
The number 644 fits into 4658 7 times, leaving a remainder of 150.
Write down 7 as next digit of the result. 
Result so far: 377.0
Subtracting 4508 from 4658 leaves us with 150.
Grab the next digit (6) from the dividend, add it to 150, then carry on: 1506 / 644

Advancing to step 7:
When dividing 1506 by 644, we get 2 with a remainder of 218.
Write down 2 as next digit of the result. 
Result so far: 3772.0
Subtract 1288 from 1506 to get 218.
Grab the next digit (6) from the dividend, add it to 218, then carry on: 2186 / 644

Let's proceed to step 8:
2186 divided by 644 is 3 with a remainder of 254.
Put 3 as the next digit of the answer. 
Result so far: 37723.0
If we subtract 1932 from 2186, we get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Step 9:
When dividing 2540 by 644, we get 3 with a remainder of 608.
Use 3 as the next digit of our solution. 
Result so far: 37723.3
Subtracting 1932 from 2540 leaves us with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Going ahead to step 10:
644 can be fit into 6080 9 times, resulting in a remainder of 284.
Use 9 as the next digit of our solution. 
Result so far: 37723.39
Subtract 5796 from 6080 to get 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Step 11:
644 can be fit into 2840 4 times, resulting in a remainder of 264.
The number 4 becomes the next digit in our result. 
Result so far: 37723.394
If we subtract 2576 from 2840, we get 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Advancing to step 12:
When dividing 2640 by 644, we get 4 with a remainder of 64.
Put 4 as the next digit of the answer. 
Result so far: 37723.3944
If we subtract 2576 from 2640, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final result is 37723.3944 with a remainder of 0.00064.