Is There a Shortcut to decltype

In this answer I wrote the C++17 code:

cout << accumulate(cbegin(numbers), cend(numbers), decay_t<decltype(numbers[0])>{});

This received some negative commentary about the nature of C++'s type association, which I'm sad to say that I agree with :(

decay_t<decltype(numbers[0])>{} is a very complex way to get a:

Zero-initialized type of an element of numbers

Is it possible to maintain the association with the type of numbers' elements, but not type like 30 characters to get it?