Answer
$1.429*10^{19}$
Work Step by Step
$\frac{1.295643*10^{9}}{(3.610*10^{-17})(2.511*10^{6})}=\frac{1.295643}{3.610*2.511}*10^{9+17-6}=0.1429326*10^{19}\approx 0.1429\times 10^{19}=1.429*10^{19}$
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