Assume Avaya contracted to provide a customer with Internet infrastructure for $$2,700,000.$ The project began in $2024$ and was completed in $2025.$ Data relating to the contract are summarized below:

$\backslash$table$[[$Costs incurred during the year,$2024,2025],[$Estimated costs to complete as of $\frac{12}{31},$$$356,000,$$$2,135,000$

Please answer the whole question in $4$ parts. Thank you.