The ratio of crore to lakh is 1:100. So no matter the amount you may need to convert from crore to lakh, you multiply it by 100 and have it in lakhs.
For instance, the number you need to convert is 7 crore. All you need to do is multiply 7 by 100, and it is equal to 700 lakh. We write it numerically as 7,00,00,000. Read more