2 ft 9 3/32 x 5 converted into feet

2 ft 9 3/32 x 5

2 ft 9 in =   2.75 ft     

So we have   (2.75 ft + 3/32 in) x 5  = (13.75 ft + 15/32 in)  = (13 ft, 9 + 15/32 in)

9 and 3/32 inches = (9+3/32)/12 feet

so if I understand you properly you want  5*(2+(9+3/32)/12 ) feet

you can do this on the site calc on the home page :)