diff --git a/ablescript/src/interpret.rs b/ablescript/src/interpret.rs
index 73e9ed8..656583a 100644
--- a/ablescript/src/interpret.rs
+++ b/ablescript/src/interpret.rs
@@ -142,15 +142,15 @@ impl ExecEnv {
                 let rhs = self.eval_expr(rhs)?;
                 match kind {
                     Add => lhs + rhs,
-                    Subtract => todo!(),
-                    Multiply => todo!(),
-                    Divide => todo!(),
+                    Subtract => lhs - rhs,
+                    Multiply => lhs * rhs,
+                    Divide => lhs / rhs,
                     Greater => Value::Bool(lhs > rhs),
                     Less => Value::Bool(lhs < rhs),
                     Equal => Value::Bool(lhs == rhs),
                     NotEqual => Value::Bool(lhs != rhs),
-                    And => todo!(),
-                    Or => todo!(),
+                    And => lhs & rhs,
+                    Or => lhs | rhs,
                 }
             }
             Not(expr) => Bool(!self.eval_expr(expr)?.into_bool()),
diff --git a/ablescript/src/variables.rs b/ablescript/src/variables.rs
index 20f0031..7a5492a 100644
--- a/ablescript/src/variables.rs
+++ b/ablescript/src/variables.rs
@@ -392,6 +392,22 @@ impl PartialOrd for Value {
     }
 }
 
+impl ops::BitAnd for Value {
+    type Output = Value;
+
+    fn bitand(self, rhs: Self) -> Self::Output {
+        todo!()
+    }
+}
+
+impl ops::BitOr for Value {
+    type Output = Value;
+
+    fn bitor(self, rhs: Self) -> Self::Output {
+        todo!()
+    }
+}
+
 impl Display for Value {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {