We divide 28213403 by 623
The aim is to understand the frequency of 623 in 28213403.

Going ahead to step 1:
623 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 623

Moving on to step 2:
If we divide 28 by 623, we get 0 and a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Bring next digit (2) of the dividend behind the 28 and repeat the process: 282 / 623

Let's proceed to step 3:
623 can be fit into 282 0 times, resulting in a remainder of 282.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 282 to get 282.
Grab the next digit (1) from the dividend, add it to 282, then carry on: 2821 / 623

Going ahead to step 4:
If we divide 2821 by 623, we get 4 and a remainder of 329.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 2492 from 2821, we get 329.
Include the next digit (3) from the dividend after 329, then repeat: 3293 / 623

On to step 5:
If we divide 3293 by 623, we get 5 and a remainder of 178.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
The remainder is 178 after subtracting 3115 from 3293.
Grab the next digit (4) from the dividend, add it to 178, then carry on: 1784 / 623

Step 6:
623 goes into 1784 2 times with a remainder of 538.
Put 2 as the next digit of the answer. 
Result so far: 452.0
If we subtract 1246 from 1784, we get 538.
Fetch the next digit (0) from the dividend, attach it to 538 and continue: 5380 / 623

Advancing to step 7:
When dividing 5380 by 623, we get 8 with a remainder of 396.
Use 8 as the next digit of our solution. 
Result so far: 4528.0
If we take 4984 away from 5380, we end up with 396.
Take the next digit (3) from the dividend and append it to 396, then repeat: 3963 / 623

Let's proceed to step 8:
When dividing 3963 by 623, we get 6 with a remainder of 225.
Record the quotient 6 as the next digit in the result. 
Result so far: 45286.0
The remainder is 225 after subtracting 3738 from 3963.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Going ahead to step 9:
623 can be fit into 2250 3 times, resulting in a remainder of 381.
The number 3 becomes the next digit in our result. 
Result so far: 45286.3
Subtract 1869 from 2250 to get 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Advancing to step 10:
623 can be fit into 3810 6 times, resulting in a remainder of 72.
The number 6 becomes the next digit in our result. 
Result so far: 45286.36
Subtracting 3738 from 3810 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 11:
If we divide 720 by 623, we get 1 and a remainder of 97.
The number 1 becomes the next digit in our result. 
Result so far: 45286.361
If we subtract 623 from 720, we get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Going ahead to step 12:
When dividing 970 by 623, we get 1 with a remainder of 347.
The number 1 becomes the next digit in our result. 
Result so far: 45286.3611
Subtract 623 from 970 to get 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

The final result is 45286.3611 with a remainder of 0.00347.