feat: add back single ampersand

src/main.rs

@@ -34,17 +34,31 @@ pub fn parse_and_calc_humanreadable(mut input: String) -> String {
         false
     };
 
+    // no need to remove the character here,
+    // as we ignore the ampersand in all other logic already
+    let should_add_back_alignment = input.contains('&');
+
     let result = parse_and_calc(&input);
 
     format!(
         "{0}{result:.1$}",
-        if should_add_back_equals { "= " } else { "" },
+        if should_add_back_equals && should_add_back_alignment {
+            "& = "
+        } else if should_add_back_equals {
+            "= "
+        } else if should_add_back_alignment {
+            "& "
+        } else {
+            ""
+        },
         get_significant_digits(&result),
     )
 }
 #[test]
 fn test_equals_readdition() {
     assert_eq!(parse_and_calc_humanreadable(" = 11".into()), "= 11");
+    assert_eq!(parse_and_calc_humanreadable(" &= 11".into()), "& = 11");
+    assert_eq!(parse_and_calc_humanreadable(" & 11".into()), "& 11");
 }
 
 pub fn parse_and_calc(s: &str) -> Float {