4397543 ÷ 726 
The aim is to understand the frequency of 726 in 4397543.

Step 1:
726 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 726

Let's proceed to step 2:
43 divided by 726 is 0 with a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Take the next digit (9) from the dividend and append it to 43, then repeat: 439 / 726

Moving on to step 3:
726 goes into 439 0 times with a remainder of 439.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 439, we end up with 439.
Take the next digit (7) from the dividend and append it to 439, then repeat: 4397 / 726

Advancing to step 4:
If we divide 4397 by 726, we get 6 and a remainder of 41.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 4356 from 4397 to get 41.
Append the next digit (5) from the dividend to 41 and continue with: 415 / 726

Going ahead to step 5:
The number 726 fits into 415 0 times, leaving a remainder of 415.
Write down 0 as next digit of the result. 
Result so far: 60.0
Deduct 0 from 415 and we're left with 415.
Fetch the next digit (4) from the dividend, attach it to 415 and continue: 4154 / 726

Moving on to step 6:
726 goes into 4154 5 times with a remainder of 524.
Put 5 as the next digit of the answer. 
Result so far: 605.0
If we subtract 3630 from 4154, we get 524.
Grab the next digit (3) from the dividend, add it to 524, then carry on: 5243 / 726

Going ahead to step 7:
5243 divided by 726 is 7 with a remainder of 161.
The next digit of our result is 7. 
Result so far: 6057.0
Deduct 5082 from 5243 and we're left with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Let's proceed to step 8:
1610 divided by 726 is 2 with a remainder of 158.
Record the quotient 2 as the next digit in the result. 
Result so far: 6057.2
Deduct 1452 from 1610 and we're left with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Let's proceed to step 9:
726 goes into 1580 2 times with a remainder of 128.
Put 2 as the next digit of the answer. 
Result so far: 6057.22
The remainder is 128 after subtracting 1452 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

The final outcome is 6057.22, with a leftover of 0.128.