I multiplied each of the tons to their prospective percentage 4662.10=466.2 666001=66600 3330.2=666 466.2+66600+666=67732.2 round to nearest whole number 67732.. what am I doing wrong?

Equivalent Units of Conversion Costs The Rolling Department of Oak Ridge Steel Company had 4,662 tons in beginning work in process inventory (90% complete) on July 1. During July, 66,600 toms were completed. The ending work in process inventory on July 31 was 3,330 tons (20% complete). What are the total equivalent units for conversion costs? Round to the nearest whole unit. 67,732 X units Feedback Check My Work Are you determining the equivalent units of materials added or of conversion of materials? When would materials typically be added in the process? When would conversion of these materials take place? Recall the definition of work in process