We're dividing 53422372 by 644 
The aim is to understand the frequency of 644 in 53422372.

Going ahead to step 1:
644 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 644

Let's proceed to step 2:
When dividing 53 by 644, we get 0 with a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Fetch the next digit (4) from the dividend, attach it to 53 and continue: 534 / 644

Let's proceed to step 3:
534 divided by 644 is 0 with a remainder of 534.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 534, we end up with 534.
Include the next digit (2) from the dividend after 534, then repeat: 5342 / 644

On to step 4:
644 can be fit into 5342 8 times, resulting in a remainder of 190.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 190 after subtracting 5152 from 5342.
Append the next digit (2) from the dividend to 190 and continue with: 1902 / 644

Let's proceed to step 5:
When dividing 1902 by 644, we get 2 with a remainder of 614.
The next digit of our result is 2. 
Result so far: 82.0
The remainder is 614 after subtracting 1288 from 1902.
Fetch the next digit (3) from the dividend, attach it to 614 and continue: 6143 / 644

Advancing to step 6:
6143 divided by 644 is 9 with a remainder of 347.
The number 9 becomes the next digit in our result. 
Result so far: 829.0
If we subtract 5796 from 6143, we get 347.
Append the next digit (7) from the dividend to 347 and continue with: 3477 / 644

Going ahead to step 7:
The number 644 fits into 3477 5 times, leaving a remainder of 257.
The number 5 becomes the next digit in our result. 
Result so far: 8295.0
Subtract 3220 from 3477 to get 257.
Grab the next digit (2) from the dividend, add it to 257, then carry on: 2572 / 644

Moving on to step 8:
If we divide 2572 by 644, we get 3 and a remainder of 640.
Use 3 as the next digit of our solution. 
Result so far: 82953.0
The remainder is 640 after subtracting 1932 from 2572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 9:
If we divide 6400 by 644, we get 9 and a remainder of 604.
Use 9 as the next digit of our solution. 
Result so far: 82953.9
Subtract 5796 from 6400 to get 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Step 10:
644 can be fit into 6040 9 times, resulting in a remainder of 244.
The next digit of our result is 9. 
Result so far: 82953.99
Subtracting 5796 from 6040 leaves us with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

The final result is 82953.99 with a remainder of 0.244.