diff --git a/src/queryplan/mod.rs b/src/queryplan/mod.rs
index d394b73..7606912 100644
--- a/src/queryplan/mod.rs
+++ b/src/queryplan/mod.rs
@@ -658,6 +658,7 @@ fn ast_binaryop_to_sexpression_binaryop(ast: ast::BinaryOp) -> BinaryOp {
         ast::BinaryOp::Add => BinaryOp::Add,
         ast::BinaryOp::Subtract => BinaryOp::Subtract,
         ast::BinaryOp::Multiply => BinaryOp::Multiply,
+        ast::BinaryOp::Divide => BinaryOp::Divide,
         ast::BinaryOp::BitAnd => BinaryOp::BitAnd,
         ast::BinaryOp::BitOr => BinaryOp::BitOr,
         ast::BinaryOp::Concatenate => BinaryOp::Concatenate,
diff --git a/src/queryplan/sexpression.rs b/src/queryplan/sexpression.rs
index 3adbb18..81d4e59 100644
--- a/src/queryplan/sexpression.rs
+++ b/src/queryplan/sexpression.rs
@@ -148,6 +148,7 @@ pub enum BinaryOp {
     Add,
     Subtract,
     Multiply,
+    Divide,
     BitAnd,
     BitOr,
     Concatenate,
@@ -169,6 +170,7 @@ impl BinaryOp {
             &Add => "+",
             &Subtract => "-",
             &Multiply => "*",
+            &Divide => "/",
             &BitAnd => "&",
             &BitOr => "|",
             &Concatenate => "concat"
diff --git a/src/sqlsyntax/ast.rs b/src/sqlsyntax/ast.rs
index aa2ff86..1139f03 100644
--- a/src/sqlsyntax/ast.rs
+++ b/src/sqlsyntax/ast.rs
@@ -16,6 +16,7 @@ pub enum BinaryOp {
     Add,
     Subtract,
     Multiply,
+    Divide,
     BitAnd,
     BitOr,
     Concatenate,
diff --git a/src/sqlsyntax/mod.rs b/src/sqlsyntax/mod.rs
index 5ccc772..078abb3 100644
--- a/src/sqlsyntax/mod.rs
+++ b/src/sqlsyntax/mod.rs
@@ -23,6 +23,7 @@ mod test {
     fn test_sql_parser() {
         parse("SELECT *, (name + 4), count(*) AS amount FROM (SELECT * FROM foo) subq, table1 GROUP BY name HAVING count(*) > 5;");
         parse("SELECT * FROM foo INNER JOIN bar ON foo.id = bar.fooId ORDER BY a DESC, b;");
+        parse("SELECT avg(milliseconds) / 1000 seconds FROM track;");
 
         parse("INSERT INTO table1 VALUES (1, 2), (3, 4), (5, 6);");
         parse("INSERT INTO table1 (a, b) VALUES ('foo' || 'bar', 2);");
diff --git a/src/sqlsyntax/parser/mod.rs b/src/sqlsyntax/parser/mod.rs
index 3ad4af7..62ae138 100644
--- a/src/sqlsyntax/parser/mod.rs
+++ b/src/sqlsyntax/parser/mod.rs
@@ -163,6 +163,7 @@ impl Rule for BinaryOp {
             &Token::Plus => Ok(BinaryOp::Add),
             &Token::Minus => Ok(BinaryOp::Subtract),
             &Token::Asterisk => Ok(BinaryOp::Multiply),
+            &Token::ForwardSlash => Ok(BinaryOp::Divide),
             &Token::Ampersand => Ok(BinaryOp::BitAnd),
             &Token::Pipe => Ok(BinaryOp::BitOr),
             &Token::DoublePipe => Ok(BinaryOp::Concatenate),
@@ -187,7 +188,7 @@ impl BinaryOp {
         use super::ast::BinaryOp::*;
 
         match self {
-            &Multiply => 5,
+            &Multiply | &Divide => 5,
             &Add | &Subtract | &BitAnd | &BitOr | &Concatenate => 4,
             // comparison
             &Equal | &NotEqual | &LessThan | &LessThanOrEqual | &GreaterThan | &GreaterThanOrEqual => 3,