Can I get help with how to answer this step by step please

Suppose that the expected value of weekry profits for an ice cream shop, before paying the manager, Amy, is E(x) =500 + 18e, where e is Amy's weekly overtime hours. Amy is risk-neutral but incurs a cost C(e) = e2 for working overtime. Thus, total expected surplus is E(S) - E(I) - C(e) Will Amy choose the surplus-maximizing level of effort if she pays the owner a fixed fee and keeps the residual profit from the shop? Alternatively, what happens if Amy earns a fixed wage and the owner gets the residual profit? If Amy pays the owner a fixed fee and then keeps the residual profit from the shop, then Amy's level of effort will be overtime hours, e, such that e = |hours (Enter your response rounded to one decimal place.) This the amount of effort that maximizes total surplus. If Amy earns a fixed wage and the owner gets the residual profit, then Amy's level of effort will be overtime hours, e, such that e - |hours (Enter your response rounded to one decimal place.) This the amount of effort that maximizes total surplus