So we want to know what is the value of 12.5*10^7. To get our answer we have to modify our 10^7. 7 is the number we have multiplied number 10. So 10^2=10*10=100, 10^5=10*10*10*10*10=100 000. So 10^7=10*10*10*10*10*10*10=10 000 000. So, 12.5*10 000 000=125 000 000.
