Warnerwoods Company uses a periodic inventory system. It entered into the following purchases and sales transactions for March.

For specific identification, units sold include $90$ ?units from beginning inventory, $375$ ?units from the March $5$ ?purchase, $85$ ?units from the March $18$ ?purchase, and $165$ ?units from the March $25$ ?purchase.

$2.$ ?Compute the number of units in ending inventory.

Ending inventory $=$ ? units