percent yield of chemical reactions

Liquid hexane CH3CH24CH3
reacts with gaseous oxygen gas O2
to produce gaseous carbon dioxide CO2
and gaseous water H2O
. If 21.1g
of carbon dioxide is produced from the reaction of 27.57g
of hexane and 179.0g
of oxygen gas, calculate the percent yield of carbon dioxide.

Round your answer to 3
significant figures.