determine the correct answers to the calculation shown below to the correct number of significant figures?

a. (32.453)(34.23+1.17)/(2.26-1.811)(0.00378)=9.671716784=9.7

b. (3.23+0.0018)=3.2318=3.2

c. (82.97-0.012)/(1.100)(21.9)=1651.618364