Current cost to source from the home plant to Country A is $ $0\mathrm{.}60$ ?per unit, plus $ $0\mathrm{.}02$ ?in shipping $($ there is no tariff $).$ ?If product is sourced from Country B $,$ ?manufacturing cost is expected to be $20\%$ ?lower, but shipping will increase to $ $0\mathrm{.}05,$ ?and there is a tariff of $10\%$ ?on CIF. What are the estimated savings on $100$ ?million units if sourcing for Country A switches from the home plant to Country B $?$