223987 ÷ 52 
The aim is to understand the frequency of 52 in 223987.

Let's proceed to step 1:
52 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 52

Going ahead to step 2:
The number 52 fits into 22 0 times, leaving a remainder of 22.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 22, we end up with 22.
Take the next digit (3) from the dividend and append it to 22, then repeat: 223 / 52

Let's proceed to step 3:
223 divided by 52 is 4 with a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 15 after subtracting 208 from 223.
Append the next digit (9) from the dividend to 15 and continue with: 159 / 52

Let's proceed to step 4:
52 can be fit into 159 3 times, resulting in a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
The remainder is 3 after subtracting 156 from 159.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 52

Step 5:
If we divide 38 by 52, we get 0 and a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 430.0
The remainder is 38 after subtracting 0 from 38.
Grab the next digit (7) from the dividend, add it to 38, then carry on: 387 / 52

Let's proceed to step 6:
The number 52 fits into 387 7 times, leaving a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 4307.0
Subtracting 364 from 387 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 7:
When dividing 230 by 52, we get 4 with a remainder of 22.
The number 4 becomes the next digit in our result. 
Result so far: 4307.4
If we subtract 208 from 230, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 8:
52 can be fit into 220 4 times, resulting in a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 4307.44
If we subtract 208 from 220, we 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.

Our division results in 4307.44 with a remaining 0.012.