(6 * 10^-1 )* ( 1,5 * 10 ^4)
(6*10^(-1) ) * (1.5*10^4) = 6*1.5 * 10^(-1+4) = 9 *10^3= 9000 или (6 * 10^(-1)) * (1.5 *10^4) = (6 * 1/10 ) * 15000= 0.6 *15000 = 9000