Required reserve ratio, rrr $=0\mathrm{.}10$Currency in circulation, C $=$ $$400$ billionCheckable deposit, D $=$ $$800$ billionExcess reserve, ER $=0\mathrm{.}8$ billionMoney supply, M$1=$ $$1,200$ billion$1.$ Calculate the values for the currency ratio, c and the excess reserve ratio e$\mathrm{.}2.$ Calculate the values for the money multiplier, m and provide in words its meaning?$3.$ What is the effect of an increase in borrowed money, BR by $5$ billion on money supply?$4.$ Suppose the central bank decides to issue a $$10$ billion bond. Given this information, what is the effect on the money base level, MB$?$