Question 1093298
billion/number of people gives $/person, so that is the operation that needs to be done
10*10^8/1.05*10^7=9.523*10=$95.23
Note:
I can use 1*10^9/10.5*10^6 and get 0.09523*10^3, and moving the decimal 3 places to the right get the same answer.  I prefer to have the constant in front of the 10 power larger in the numerator than in the denominator.