Using the picture attached. Please help with the following:

$1.$ Prepare journal entries to record the cost of sales on January $24$ and March $16$th$.$ Using the weighted$-$average method.

$2.$ If FIFO is used, calculate the amount of the understatement or overstatement in the cost of sales for the first six months of the current year.

$3.$ If FIFO is used, calculate the amount of the understatement or overstatement in the current assets at June $30$ of the current year.

Thanks!