Hi TZC community 

I tried using the TZC POS Calculator (http://crofly.bplaced.net/ ) but I don't fully understand the input parameters.

Can someone provide me a link to understand them better or explain them to community here & myself.

Number Of Coins per Input ->  This is how many coins to POS
 
Number Of Inputs ->  ?
 
Age of transaction (days) -> How many days it's already staking (POS'ing)   

POS difficulty -> 10  Where can I find the latest Difficulty ?  (Can't the wallet have a info panel to show that ?)

 
I would like to understand the formula so that I can put in inside excel sheet.

Thank you 

CRB