PLEASE provide a very detailed answer so it can be referenced in layman terms, thanks

Required: 1. What is the incremental manufacturing cost incurred if the company increases production from 20,250 to 20,251 units? 2. What is the incremental cost incurred if the company increases production and sales from 20,250 to 20,251 units? 3. Assume that Kubin Company produced 20,250 units and expects to sell 19,980 of them. If a new customer unexpectedly emerges and expresses interest in buying the 270 extra units that have been produced by the company and that would otherwise remain unsold, what is the incremental manufacturing cost per unit incurred to sell these units to the customer? 4. Assume that Kubin Company produced 20,250 units and expects to sell 19,980 of them. If a new customer unexpectedly emerges and expresses interest in buying the 270 extra units that have been produced by the company and that would otherwise remain unsold, what incremental selling and administrative cost per unit is incurred to sell these units to the customer? Complete this question by entering your answers in the tabs below. What is the incremental cost incurred if the company increases production and sales from 20,250 to 20,251 units? Note: Round your answer to 2 decimal places