4521811 ÷ 628 
The aim is to understand the frequency of 628 in 4521811.

Moving on to step 1:
4 divided by 628 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 628

Moving on to step 2:
The number 628 fits into 45 0 times, leaving a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 45, we get 45.
Fetch the next digit (2) from the dividend, attach it to 45 and continue: 452 / 628

Going ahead to step 3:
When dividing 452 by 628, we get 0 with a remainder of 452.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 452 and we're left with 452.
Grab the next digit (1) from the dividend, add it to 452, then carry on: 4521 / 628

Let's proceed to step 4:
628 can be fit into 4521 7 times, resulting in a remainder of 125.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 4396 from 4521 to get 125.
Include the next digit (8) from the dividend after 125, then repeat: 1258 / 628

Step 5:
628 goes into 1258 2 times with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 72.0
If we take 1256 away from 1258, we end up with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 628

Let's proceed to step 6:
628 goes into 21 0 times with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 720.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 628

On to step 7:
628 goes into 211 0 times with a remainder of 211.
Put 0 as the next digit of the answer. 
Result so far: 7200.0
If we take 0 away from 211, we end up with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Going ahead to step 8:
628 can be fit into 2110 3 times, resulting in a remainder of 226.
Use 3 as the next digit of our solution. 
Result so far: 7200.3
If we take 1884 away from 2110, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Let's proceed to step 9:
When dividing 2260 by 628, we get 3 with a remainder of 376.
Put 3 as the next digit of the answer. 
Result so far: 7200.33
Subtracting 1884 from 2260 leaves us with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Our division results in 7200.33 with a remaining 0.376.