We're dividing 386643 by 24 
The aim is to understand the frequency of 24 in 386643.

Moving on to step 1:
24 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 24

Advancing to step 2:
24 goes into 38 1 times with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 24 from 38 leaves us with 14.
Append the next digit (6) from the dividend to 14 and continue with: 146 / 24

Advancing to step 3:
24 goes into 146 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
Subtract 144 from 146 to get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 24

Let's proceed to step 4:
24 can be fit into 26 1 times, resulting in a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 161.0
Subtracting 24 from 26 leaves us with 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 24

Advancing to step 5:
24 can be fit into 24 1 times, resulting in a remainder of 0.
The next digit of our result is 1. 
Result so far: 1611.0
Subtracting 24 from 24 leaves us with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 24

On to step 6:
If we divide 3 by 24, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 16110.0
Subtract 0 from 3 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
24 goes into 30 1 times with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 16110.1
Deduct 24 from 30 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
The number 24 fits into 60 2 times, leaving a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 16110.12
Subtract 48 from 60 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
The number 24 fits into 120 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 16110.125
Deduct 120 from 120 and we're left 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.

Moving on to step 10:
When dividing 0 by 24, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16110.125
Deduct 0 from 0 and we're left 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.

Moving on to step 11:
The number 24 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 16110.125
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.

Our division results in 16110.125 with a remaining 0.0.