Suppose a bicyclist is burning 38 Calories per mile traveled. Convert this rate of energy use to a number of “miles per gallon of gasoline equivalent,” by comparing this to the acloric content of one US gallon of gasoline (132 MJ). (This is similar to the number of miles per gallon of, e.g., olive oil, because gasoline and vegtable oils have similar mass density (~0.72 g/cc vs. ~0.9 g/cc) and caloric density (~11.6 Cal/g vs ~9 Cal/g.)

The answer is 830.2. But I don’t know how it is solved.