so basically we only use the associative property of multiplication and one of the laws of exponents
associative=a(bc)=(ab)c also law of exponent=a^x times a^y=a^(x+y) so
(2 times 10^-3) times (3 times 10^4) associative 2 times 10^-3 times 3 times 10^4 2 times 3 times 10^-3 times 10^4 law of exponents 10^-3 times 10^4=10^(-3+4)=10^1 2 times 3=6 the answer is 6 times 10^1 or (6*10^1) aka 60
