Gravity form show field in notifications

I have a number field ID:60. I have it conditional visible and defaulted to 0. I want it to display in the notification email. It only populates when I have it visible. How do I make it populate when not visible?

Dear {Name (First):51.3} {Name (Last):51.6},

Thank you for you interest in our services. Your estimated total cost is ${Estimate:60}.

Can you share more info about the conditional and the calculation which is happening in field 60?