Il numero 1780, millesettecentottanta in Italiano, in Inglese si dice one thousand seven hundred eighty.
Il numero ordinale 1780° in inglese si dice one thousand seven hundred eightieth.
1771: one thousand seven hundred seventy-one
1772: one thousand seven hundred seventy-two
1773: one thousand seven hundred seventy-three
1774: one thousand seven hundred seventy-four
1775: one thousand seven hundred seventy-five
1776: one thousand seven hundred seventy-six
1777: one thousand seven hundred seventy-seven
1778: one thousand seven hundred seventy-eight
1779: one thousand seven hundred seventy-nine
1781: one thousand seven hundred eighty-one
1782: one thousand seven hundred eighty-two
1783: one thousand seven hundred eighty-three
1784: one thousand seven hundred eighty-four
1785: one thousand seven hundred eighty-five
1786: one thousand seven hundred eighty-six
1787: one thousand seven hundred eighty-seven
1788: one thousand seven hundred eighty-eight
1789: one thousand seven hundred eighty-nine