Calories of a piece of chicken breast: 160 calories (670 kilojoules)

400 grams of cauliflower calories: 96 kcal (40 1 kj)

500 grams of wax gourd calories: 55 kilocalories (230 kilojoules)

Total heat = 270+160+96+55 = 581kcal (243 1 kj)

Therefore, the calories of three bowls of porridge, 1 chicken breast, 400g cauliflower and 500g wax gourd are 58 1 kcal (243 1 kj). Note: Calories are metric units of heat (domestic use) and kilojoules are British units of heat (international use).