A reversible engine takes in heat from a reservoir at 527°c and gives out heat to a sink at 127°c. how many calories per second must it take from the reservoir

A reversible engine takes in heat from a reservoir at 527°C and gives out heat to a sink at 127°C. How many calories per second must it take from the reservoir to produce mechanical work at the rate of 750 W? ogolovsh s9wog ad tsdt bioi o18 S