How do calculate Yards from Kgs

Find out the calculations of Yards from kgs: (in knit fabric) Say,        Fabric GSM   - 140        Fabric width   -  45"        Fabric Weight -  0.49181 kg Rules: Fabric length  =  Fabric weight / ( Fab width X Fab GSM /1550 / 1000) Fabric length  =  0.49181 / ( 6300 / 1550 / 1000) Fabric length  =  0.49181 / 0.00406451612 Fabric length  = 121" (where the fab width is 45" open) Farbic length  = 3.3611 yards    (121/36")