This is brilliant. I've known about crores and lakhs since about 2001, although I always have to look up what they are (one lakh is a hundred thousand, written "1,00,000"; one crore is a hundred hundred thousand - or ten thousand thousand, or ten million, written "1,00,00,000"). If you don't know them already, you will meet them a lot if you start reading articles about bribery and corruption in cricket. But this video gets way better than that. My favourite part:
"and I think that's one of the best things about linguistics, about being human, about all of this, someone on the other side of the world, something that they will consider absolutely normal, will completely blow your mind".