4) Solve the following problems

Q. Perform each of the following calculations. Round off your answers to three digits.

a. (3.26×10^{4}) (1.54×10^{6})

b. (8.39×10^{7}) (4.53×10^{9})

c)\(8.94 × 10^6\over 4.35 × 10^4\)

d)\((9.28 × 10^9) (9.9 × 10^{-7})\over (511) (2.98× 10^{-6}) \)