Haru is a self-employed cash-method, calendar-year taxpayer, who made the following cash payments related to his business this year. Calculate the after-tax cost of each payment assuming Haru has a 37 percent marginal tax rate. Note: Do not round intermediate calculations and round your final answer to the nearest whole dollar amount. c. $1,050 for office supplies in May of this year. Haru used half of the supplies this year, and he will use the remaining half by February of next year. After-tax cost