What is the ratio mass of earth to Mercury when earth =5.98 x 10 to the power of 24 and mercury is 3.59 x 10 to the power of 23

How do u do that 

[5.98 x 10^24] / [3.59 x 10^23]=16.66 times-The Earth larger than Mercury, or:

1 / 16.66=.06 x 100 =6% is Mercury's mass compared to Earth.