fix: combine arguments in the correct order

`tylc 40e3 / 6e3` interpreted the args as "6e3/40e3"
(before this change)

src/main.rs

@@ -9,8 +9,8 @@ use rug::Float;
 mod nodes;
 
 fn main() {
-    let input = match env::args().skip(1).reduce(|x, a| a + &x) {
-        Some(s) => s,
+    let input = match env::args().skip(1).rev().reduce(|x, a| a + &x) {
+        Some(s) => dbg!(s),
         None => {
             let mut buf = String::new();
             io::stdin().read_to_string(&mut buf).unwrap();