In physics, Albert Einstein's famous formula for mass-energy equivalence defines an object's energy, $E$, measured in joules $(\text{J})$, in terms of its mass, $m$, measured in kilograms $(\text{kg})$, and the speed of light, $c$, measured in meters per second $(\text{m}/\text{s})$. The formula is commonly written as $E = mc^2$.
**Rearrange the formula to solve for mass $(m)$.**
$m=$
[[☃ expression 3]]
**Given that the speed of light is approximately $300{,}000{,}000\text{ m}/\text{s}$, what is the mass of an object that contains $1.8\times 10^{14}\text{ J}$ of energy?**
*Round your answer, if necessary, to the nearest thousandth.*
$m =$ [[☃ numeric-input 1]] $\text{kg}$