diff --git a/crates/polars-core/src/series/arithmetic/borrowed.rs b/crates/polars-core/src/series/arithmetic/borrowed.rs
index 6c7a11fafb74..e4b7a535a81b 100644
--- a/crates/polars-core/src/series/arithmetic/borrowed.rs
+++ b/crates/polars-core/src/series/arithmetic/borrowed.rs
@@ -634,17 +634,8 @@ impl Div for &Series {
                     list_borrowed::NumericListOp::Div.execute(self, rhs)
                 },
                 _ => {
-                    let leaf_supertype =
-                        try_get_supertype(&self.dtype().leaf_dtype(), &rhs.dtype().leaf_dtype())?;
-                    let leaf_supertype = if leaf_supertype.is_float() {
-                        leaf_supertype
-                    } else {
-                        DataType::Float64
-                    };
-
-                    let lhs = self.cast(&self.dtype().cast_leaf(leaf_supertype.clone()))?;
-                    let rhs = rhs.cast(&rhs.dtype().cast_leaf(leaf_supertype))?;
-                    lhs.divide(&rhs)
+                    let (lhs, rhs) = coerce_lhs_rhs(self, rhs)?;
+                    lhs.divide(rhs.as_ref())
                 },
             },
         }
diff --git a/py-polars/polars/series/series.py b/py-polars/polars/series/series.py
index 823d8d87e444..84819242e9e1 100644
--- a/py-polars/polars/series/series.py
+++ b/py-polars/polars/series/series.py
@@ -1088,8 +1088,8 @@ def __truediv__(self, other: Any) -> Series | Expr:
             self._recursive_cast_to_dtype(Float64())
             if not (
                 self.dtype.is_float()
-                or self.dtype.is_nested()
-                or (isinstance(other, Series) and other.dtype.is_nested())
+                or isinstance(self.dtype, List)
+                or (isinstance(other, Series) and isinstance(other.dtype, List))
             )
             else self
         )