Usage:
$ dolarhoy AUD 2.210 2.330 BRL 1.610 1.770 CAD 2.770 2.990 CHF 2.980 3.230 CLP 0.005 0.006 EUR 4.490 4.620 GBP 4.980 5.330 JPY 0.035 0.039 MXN 0.210 0.259 PYG 0.672 0.777 USD 3.440 3.470 UYU 0.146 0.165