Write the following in Hindu-Arabic numerals:

(i) $\overline{\mathrm{IV}}\mathrm{CDXLIC}$
(ii)$\overline{\mathrm{VI}}\mathrm{CKXLIX}$
(iii) $\overline{\mathrm{IX}}\mathrm{CCCXCI}$
(iv) $\overline{\mathrm{LX}}\mathrm{XIX}$

(i) 4,000 + (500 − 100) + (50 − 10) + 4 = 4,444
(ii) 6,000 + (1,000 − 100)  + (50 − 10) + 9 = 6,949
(iii) 9,000 + 100 + 100 + 100 + (100 − 10) + 1 = 9,391
(iv) 70,000 + 9 = 70,009