Based on the estimates of the U$.$S$.$ daily oil demand function is Q $=$ D$($p$)=48\mathrm{.}71$p$-0\mathrm{.}25$ and supply function is Q$=$S$($p$)=3\mathrm{.}45$p$0\mathrm{.}25.$ Please use calculus to determine the change in deadweight loss from a marginal increase in a tariff, evaluated where the tariff is initially zero.