What is the formula and answer? I don’t know the formula or how to solve this equation

Question

Duncan knows that it takes 36400 cal of energy to heat a pint of water from room temperature to boiling. However, Duncan has prepared Ramen noodles so many times he does not need to measure the water carefully. If he happens to heat 0.700 pint of room temperature water, how many kilojoules of heat energy will have been absorbed by the water at the moment it begins to boil?

Answer 1

36400 cal/pint x 0.7 pints = 25480 cal

25480 cal x 4.184 J/cal = 106,608 J = 107 kJ