Please solve part H. Thank you.

Food is often irradiated with either x rays or electron beams to help prevent spoilage. A low dose of 5-75 kilorads (krad) helps to reduce and kill inactive parasites, a medium dose of 100-400 krad kills microorganisms and pathogens such as salmonella, and a high dose of Part H 2300-5700 krad sterilizes food so that it can be stored without refrigeration. How much energy would a 250 g portion of fish absorb? Express your answer in joules