Kai operates the Surf Shop in Laie, Hawaii, which designs, manufactures, and customizes surfboards. Hawaii has a hypothetical $4$ percent excise tax rate, technically paid by the seller. However, the state also allows "tax on tax" to be charged, which effectively means a customer is billed $4\mathrm{.}166$ percent of the sales price.

Determine the sales tax the Surf Shop must collect and remit$-$or the use tax liability the customer must pay$-$for each of the following orders:

Note: Leave no answer blank. Enter zero if applicable. Round your intermediate computations and final answers to the nearest whole dollar amount. Note that Hawaii and Nebraska doesn't tax services.

Required:

a$.$ Kalani, a Utah customer, places an Internet order for a $$1,800$ board that will be shipped to Provo, Utah, where the local sales tax rate is $6\mathrm{.}85$ percent.

b$.$ Nick, an Alabama resident, comes to the retail shop on vacation and has a $$2,800$ custom board made. Nick uses the board on vacation and then has the Surf Shop ship it to Tuscaloosa, Alabama, where the sales tax rate is $9$ percent.

c$.$ Jim, a Michigan resident, places an order for a $$2,800$ custom board at the end of his vacation. Upon completion, the board will be shipped to Ann Arbor, Michigan, where the sales tax rate is $6$ percent.

d$.$ Scott, a Nebraska resident, sends his current surfboard to the Surf Shop for a custom paint job. The customization services come to $$1,600.$ The board is shipped to Lincoln, Nebraska, where the sales tax rate is $7\mathrm{.}25$ percent.