diff --git a/src/multi_array_operation.h b/src/multi_array_operation.h
index bb05787..d9100f0 100644
--- a/src/multi_array_operation.h
+++ b/src/multi_array_operation.h
@@ -325,10 +325,17 @@ namespace MultiArrayTools
 	
 	block(blockIndex);
 	second.block(blockIndex);
-	
+	//size_t cnt = 0;
+	//std::clock_t cs = clock();
 	for(*mIndex = 0; mIndex->pos() != mIndex->max(); mIndex->pp(blockIndexNum) ){
+	    //std::clock_t c1 = clock();
 	    get() = mSecond.get();
+	    //std::clock_t c2 = clock();
+	    //cnt += c2 - c1;
 	}
+	//std::clock_t ce = clock();
+	//std::cout << "total time = " << ce - cs << std::endl;
+	//std::cout << "calc time  = " << cnt << std::endl;
     }
     
     template <typename T, class OpClass, class... Ranges>
diff --git a/src/ranges/rpack_num.h b/src/ranges/rpack_num.h
index 8df1a34..ffe64c9 100644
--- a/src/ranges/rpack_num.h
+++ b/src/ranges/rpack_num.h
@@ -167,9 +167,8 @@ namespace MultiArrayHelper
 	template <class... Indices>
 	static size_t makePos(const std::tuple<std::shared_ptr<Indices>...>& iPtrTup)
 	{
-	    auto ID = std::get<N>(iPtrTup)->id();
-	    return std::get<N>(iPtrTup)->pos() +
-		RPackNum<N-1>::makePos(iPtrTup) * std::get<N>(iPtrTup)->max();
+	    const auto& idx = *std::get<N>(iPtrTup);
+	    return idx.pos() + RPackNum<N-1>::makePos(iPtrTup) * idx.max();
 	}
 
 	template <class Pack, class IndexType, class... Indices>
@@ -328,7 +327,6 @@ namespace MultiArrayHelper
 	template <class... Indices>
 	static size_t makePos(const std::tuple<std::shared_ptr<Indices>...>& iPtrTup)
 	{
-	    auto ID = std::get<0>(iPtrTup)->id();
 	    return std::get<0>(iPtrTup)->pos();
 	}