The output from meanaerochord is:
MEAN AERODYNAMIC CHORD DEFINED BY f117.nml # y xle c xte 1 0.00000 0.00000 1120.00000 1120.00000 2 200.00000 344.00000 400.00000 744.00000 3 375.00000 645.00000 400.00000 1045.00000 4 500.00000 860.00000 0.00000 860.00000 area of wing= 247000.0000 length of MAC= 643.0229 y of MAC= 175.4723 xle of MAC= 301.8124 xte of MAC= 944.8354 x of c/4 of MAC= 462.5682
The MAC of the right wing is shown with its quarter-chord point designated.