Requirements

A StackTalk installation, see here

Whole numbers

Start a repl:

sk -i

Do some arithmetic, using reverse polish notation.

1 2 +
The Stack is: [
  .{ .int = 3 }
]
4 *
The Stack is: [
  .{ .int = 12 }
]

Remove the top of the stack

#
The Stack is: [
]

Floating point numbers

Do arithmetic to floating point numbers.

1.1 2.4 +
The Stack is: [
  .{ .float = 3.5 }
]
1.5 div
The Stack is: [
  .{ .float = 2.3333333333333335 }
]