Indian Number System: Huge Numbers

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Across
  1. 4. septem,sieben,seofon,seven share origins with
  2. 5. this book contains AlBeruni's account of India's prowess in Sciences
  3. 7. puthumana somayaji, 18th century astronomer from
  4. 8. revolutions of the Sun in this time period is
  5. 9. the present decimal place value system had its roots in
Down
  1. 1. Brahma has a long day indeed, 4.32X10^9 earth-years
  2. 2. this Buddhist work deals with huge numbers in a beautiful elaborate fashion
  3. 3. one of the oldest exponents of huge numbers
  4. 4. a large number, like an ocean in fact
  5. 6. 16 of them took part in the 18-day war