Input box to sum and display sum as msgbox

This reads a lot like a homework or learning task.. so I will help you along the way but wont give the solution.

Remember your basic math, it still applies in VBA...
& will not sum anything & will just combine 2 strings into 1.

you will need to make an actual calculation to get the sum and then show that as a result in the messagebox
the 3 variables that store the results of the inputboxes is a good start..