1 triple = 0.75 quadruple; 1 quadruple = 1.333333 triple
million ↔ one
billion ↔ one
billion ↔ thousand
million ↔ thousand
million ↔ billion
billion ↔ trillion
trillion ↔ one
crore ↔ million
lakh ↔ million
crore ↔ billion
lakh ↔ billion
crore ↔ one
lakh ↔ one