Hey there,
How are you doing? Okay, so I understand that you're looking for someone to setup the module and Drupal system in general so that when you enter one currency, the other currencies are automatically calculated. Well, I am delighted to inform you that I can work on this project and make it a success for you, as I've years of experience with Drupal.
Let me ask you something - other than this task, do you want any changes or customization?
I have excellent work history, top ratings & feedback from my clients, so I assure you that you're in the right hands. If you have any questions or concerns, please let me know at earliest.
Sincerely,
Wasif