When a uranium nucleus at rest breaks apart in the process known as fission in a nuclear reactor, the resulting fragments have a total kinetic energy of about 205 MeV. How much mass was lost in the process?

(may be broke/outdated!)
When a uranium nucleus at rest breaks apart in the process known as fission in a nuclear reactor, the resulting fragments have a total kinetic energy of about 205 MeV. How much mass was lost in the process?