Complex sentence: By 1836, the number of Chinese (13,749) had overtaken that of the Malays (12,487, including Bugis, Javanese and Balinese), and by the beginning of 1850, the population had reached 60,000,24,790 of them Chinese.
Split into simpler sentences: By 1836, the Chinese at 13,749 had become the most populous ethnic group, overtaking the Malay grouping (12,487, including Bugis, Javanese and Balinese). By the beginning of 1850, the population had reached 60,000,24,790 of them Chinese.