HELP PLEASEEE What number should the numerator and denomator of 2/6 be multiplied by to show that 2/6 is equivalent to 24/72

In 2014, the three largest economies in the world were (listed in order, from largest): a) the u.s., china, germany. b) the u.s., china, japan. c) china, the u.s., japan. d) china, the u.s., germany.