We're dividing 17622595 by 623 
The aim is to understand the frequency of 623 in 17622595.

Step 1:
1 divided by 623 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 623

Advancing to step 2:
The number 623 fits into 17 0 times, leaving a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Include the next digit (6) from the dividend after 17, then repeat: 176 / 623

Moving on to step 3:
623 goes into 176 0 times with a remainder of 176.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 176 after subtracting 0 from 176.
Bring next digit (2) of the dividend behind the 176 and repeat the process: 1762 / 623

On to step 4:
If we divide 1762 by 623, we get 2 and a remainder of 516.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 1246 from 1762, we get 516.
Grab the next digit (2) from the dividend, add it to 516, then carry on: 5162 / 623

Advancing to step 5:
When dividing 5162 by 623, we get 8 with a remainder of 178.
Record the quotient 8 as the next digit in the result. 
Result so far: 28.0
Deduct 4984 from 5162 and we're left with 178.
Fetch the next digit (5) from the dividend, attach it to 178 and continue: 1785 / 623

Let's proceed to step 6:
623 goes into 1785 2 times with a remainder of 539.
Record the quotient 2 as the next digit in the result. 
Result so far: 282.0
Deduct 1246 from 1785 and we're left with 539.
Take the next digit (9) from the dividend and append it to 539, then repeat: 5399 / 623

Let's proceed to step 7:
If we divide 5399 by 623, we get 8 and a remainder of 415.
Write down 8 as next digit of the result. 
Result so far: 2828.0
Subtracting 4984 from 5399 leaves us with 415.
Grab the next digit (5) from the dividend, add it to 415, then carry on: 4155 / 623

Moving on to step 8:
623 can be fit into 4155 6 times, resulting in a remainder of 417.
Use 6 as the next digit of our solution. 
Result so far: 28286.0
Deduct 3738 from 4155 and we're left with 417.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4170, and continue the process.

Going ahead to step 9:
The number 623 fits into 4170 6 times, leaving a remainder of 432.
Write down 6 as next digit of the result. 
Result so far: 28286.6
Subtract 3738 from 4170 to get 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Let's proceed to step 10:
The number 623 fits into 4320 6 times, leaving a remainder of 582.
Put 6 as the next digit of the answer. 
Result so far: 28286.66
If we subtract 3738 from 4320, we get 582.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

The final outcome is 28286.66, with a leftover of 0.582.