Question 58900
1 parsec = 3.1 x 10^16 m
so 1.62 x 10^9 parsecs = 1.62 x 10^9 x 3.1 x 10^16

                      = 5.022 x 10^25 m
The farthest observable galaxies is 5.022 x 10^25 m
 (approximately)

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