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How Do I Compute The Following 6 10 7 1 79 10 5 4 1 10 3 M 3 6 9 10 2 M 3 (1)

how do i compute the following . The answer in scientific notation please.

1. 4.6*10-7/1.79*10-5
2. 4.1*10-3 m3- 6.9*10-2m3/ 7.2*10-6m*8.943*104m
3. (8.1*10-2)(3.465*105) / 9.0*102
4. (3.47*103) +(2.6*105) / (2.634*10-2)(9.76*105)
5. (3.3*103) – (5.45*102) / (6.6*106) – (2.8*104)