There are $30$ stocks in the DJIA and the divisor was $0\mathrm{.}14744568.$ On February $12,2020,$ the DJIA reached a pre$-$coronavirus pandemic high of $29,551\mathrm{.}42.$ On March $23,2020,$ theDJIA reached a coronavirus pandemic low of $18,591\mathrm{.}93.$a$.$ Calculate the average loss in point per stock in the DJIA.

b$.$ Calculate the average loss in dollar per stock in the DJIA.