Weighted average cost method with perpetual inventory

The beginning inventory at Midnight Supplies and data on purchases and sales for a three$-$month period ending March $31$ are as follows:

Date Transaction Number

of Units Per Unit Total

Jan. $1$ Inventory $7,900$ $$70\mathrm{.}00$ $$553,000$

$10$ Purchase $23,70080\mathrm{.}001,896,000$

$28$ Sale $11,850140\mathrm{.}001,659,000$

$30$ Sale $3,950140\mathrm{.}00553,000$

Feb. $5$ Sale $1,580140\mathrm{.}00221,200$

$10$ Purchase $56,88082\mathrm{.}504,692,600$

$16$ Sale $28,440150\mathrm{.}004,266,000$

$28$ Sale $26,860150\mathrm{.}004,029,000$

Mar. $5$ Purchase $47,40084\mathrm{.}504,005,300$

$14$ Sale $31,600150\mathrm{.}004,740,000$

$25$ Purchase $7,90085\mathrm{.}00671,500$

$30$ Sale $27,650150\mathrm{.}004,147,500$