Please help to solve by usung exell phormulas or$/$and eqatiion.

$1.$ The sales for Plattsburgh Batteries, Inc. were as below. Forecast sales using MA$(2)$ and calculate MAD, MSE, and MAPE.

$2.$ The sales for Plattsburgh Batteries, Inc. were as below. Forecast sales using WMA$(4)$ with weights of $0\mathrm{.}4,0\mathrm{.}3,0\mathrm{.}2,$ and $0\mathrm{.}1.$

The sales for Plattsburgh Batteries, Inc. were as below. Forecast sales for Period $9$ using ES$(0\mathrm{.}3)$ assuming that the initial forecast is $180$ in Period $1.$