We're dividing 423721 by 56 
The aim is to understand the frequency of 56 in 423721.

Step 1:
4 divided by 56 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 56

Moving on to step 2:
56 can be fit into 42 0 times, resulting in a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Append the next digit (3) from the dividend to 42 and continue with: 423 / 56

Step 3:
423 divided by 56 is 7 with a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
The remainder is 31 after subtracting 392 from 423.
Include the next digit (7) from the dividend after 31, then repeat: 317 / 56

Let's proceed to step 4:
If we divide 317 by 56, we get 5 and a remainder of 37.
Record the quotient 5 as the next digit in the result. 
Result so far: 75.0
Deduct 280 from 317 and we're left with 37.
Fetch the next digit (2) from the dividend, attach it to 37 and continue: 372 / 56

On to step 5:
372 divided by 56 is 6 with a remainder of 36.
The next digit of our result is 6. 
Result so far: 756.0
If we subtract 336 from 372, we get 36.
Take the next digit (1) from the dividend and append it to 36, then repeat: 361 / 56

Moving on to step 6:
56 can be fit into 361 6 times, resulting in a remainder of 25.
Put 6 as the next digit of the answer. 
Result so far: 7566.0
Subtract 336 from 361 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
56 can be fit into 250 4 times, resulting in a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 7566.4
The remainder is 26 after subtracting 224 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 8:
If we divide 260 by 56, we get 4 and a remainder of 36.
The next digit of our result is 4. 
Result so far: 7566.44
If we take 224 away from 260, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Our division results in 7566.44 with a remaining 0.036.