I need help with the math for yield calculations.

Teacher directions: Yield calculations (include all math and a brief description). To determine limiting reagent, use 6.3 g/100 mL NaOCl in bleach.

mass of cyclododecano (starting material) l= 0.498g 184.32g/mol

amount of bleach=5mL

mass of cyclododecanone (product) = 0.387g 182.30g/mol

0.498g (1mol/184.32) x (1mol/1mol) x (182.30/1mol) = 0.4925g <----- what is this number? the Actual? My TA set up this equation but I don't know what this means.

0.387/0.4925 (100) = 78.572 %

I thought I was supposed to use 0.498/0.387 (100)= 77.7% for the yield.

Can you please clarify this and help me with the equation for the limiting reagent, I'm not sure what needs to be done and how to write all the calculations in a description.