Convert 1 lightyear into the corresponding number of astronomical units.
1 AU = 149.6 × 106 km
11y = 9.46 × 1012 km
11y = (9.46 x 1012)/(149 . 6 x106) = 0.06323 x 106
11y = 6.3235 x 104 = 63, 235AU
