Equivalent Units of Conversion Costs

The Rolling Department of Jabari Steel Company had $7,860$ tons in beginning work in process inventory $(80\%$ complete$)$ on October $1.$ During October, $65,500$ tons were completed. The ending work in process inventory on October $31$ was $4,585$ tons $(80\%$ complete$).$

What are the total equivalent units for conversion costs? Round to the nearest whole unit