// Ex1_7 Page:17 (2014)
clc; clear;
c = 3e+08;  // Speed of light in vacuum, m/s
delta_E = 4e+026;   // Rate of radiation of energy from the sun, J/s
delta_m = delta_E/c^2;  // The decrease in mass, kg
printf("\nThe decrease in mass = %4.2e kg", delta_m);

// Result
// The decrease in mass = 4.44e+09 kg