If the election is thrown into the House, Delaware (with three electoral votes) would get one vote, as would California (with 55 electoral votes). A simple majority of the states, 26, is required to elect.
However, under rules used in 1800 and 1824, a state must cast a blank ballot if its House delegation is evenly split and no one gets a majority of the congressional votes. If several states cast blank ballots, it is possible that no candidate would win the required 26 states. Then multiple rounds of voting would be required.
You think the country is mad at Congress now? Imagine what would happen if the House actually chose the next president — particularly if it decided for the candidate who finished second in the national popular vote.