Searching Multiple rows and Columns

I have a complex problem. I have three sheets in my workbook that I'm using. We can call them Sheet1, Sheet2, and Sheet3. On Sheet1 I have several main cities with zip codes. I need to see if the zipcode from sheet1 is found on sheet2. The problem is on Sheet2 the info is listed like this

Chicago 54654 56454 54541
NY 45465 54545 45546
Boston 54545 25456 25454

The same zipcode could be found under different cities.

Then I need to take the full Row of zipcodes that the zipcode from sheet1 is found in.

Example: If the zipcode on sheet1 was 54545 then it would take all three of the NY zip codes and all three of the Boston zipcodes. The 6 numbers are then ran against a different list of zipcodes on Sheet3 and counted how many times any of the six zipcodes come up.

This is all one formula and the output is on Sheet1.

Any suggestions?

The range of the zipcodes on Sheet2 varies. The city is found in column 1 and the zipcodes are listed in the columns to the left. The number of columns depends on the city.
In Sheet3 the zipcode is found in column E ranging from row 3 to row 704, but that may increase in the future.

I have attached a simple worksheet to show what I'm trying to do. On Sheet1 Row 1 it will take the zipcode '11111' and look it up on Sheet2. Since it is found in Row1 it will take all 4 zipcodes in that row. It will then take those for zipcodes and count how many times they appear on Sheet3. So if you did Row2 on Sheet1 it would take the zipcode '22222' and find it in Sheet2. Since it's found on two seperate rows it takes all 7 zipcodes and finds how many times they are found on Sheet3. Copy of Book1.xlsx