#color(blue)(83 000 000 xx 1) = 83 000 000#
#color(brown)("But 1 can be written as "10^7/10^7)#
#color(blue)(83000000xx10^7/10^7 )= 83000000xx1 = 83000000#
#color(blue)(color(magenta)(83000000)/(color(green)(10^7))xx10^7)=83000000xx1=83000000#
#color(brown)("Divide the denominator of "color(green)(10^7)" into "color(magenta)(83000000))#
#color(blue)(8.3xx10^7 )= 83000000#