This the complete problem I need help with:
Albert and Po work in a factory that makes leotards. Albert cuts out the material, and Po stitches the side seams. Albert can cut the parts for 1 box of leotards in 9 hours, and Po can stitch the side seams for 1 box of leotards in 27 hours (including any breaks). If Albert and Po start work at the same time, how long will it be before there is 1 full box of leotards cut and waiting for their side seams to be stitched?