String Interpolation-problem

Question

a = 5
b = 2
puts "The sum is #{a+b}"
how to solve the following:

a = .567
b = .789
puts "The sum is #{a+b}"

Answer 1

The compiler tells you what to do. Put a 0 before the .
a = 0.567 and
b = 0.789

Answer 2

thanks it is right to explain it