The following information is for the inventory of mini$-$kettles at Monty Company Limited for the month of May.

$($a$1)$ answer is $3323.$ Assuming that the perpetual inventory method is used, calculate the inventory cost at May $31$ under moving$-$average. $($Round unit cost to $3$ decimal places, e$.$g$.52\mathrm{.}752$ and final answer to $2$ decimal places, e$.$g$.52\mathrm{.}75.)$