Update solver.py

solver.py

@@ -88,8 +88,8 @@ def process_expression(expr_str):
 
         elif 'factorial' in processed_expr:  # Factorial case
             expr = parse_expr(processed_expr, transformations=(standard_transformations + (implicit_multiplication_application,)))
-            result = expr.doit()  # Evaluate factorial properly
-            return f"{format_expression(expr)} = {format_expression(result)}"
+            result = expr.doit()  # Compute the factorial correctly
+            return f"{format_expression(expr)} = {result}"
 
 
         elif '/' in expr_str:  # Handle fractions and return decimal