Martin Co$.$ reported revenues of $$19,500,000$ and COGS of $$9,225,000.$

Here is their note on inventories:

$20092010$

Packing Materials $ $350,400$ $$287,300$

Work in process $3,860,0003,220,000$

Finished goods $6,420,0004,670,000$

What was the inventory turnover for $2009?$