A trader creates a long butterfly spread from options with strike prices $60,65,$ and $70$ by trading a total of $400$ options. The options are worth $11\mathrm{.}2,14\mathrm{.}0,$ and $18\mathrm{.}4.$ What is the maximum net loss $($after the cost of the options is taken into account$)?($In your answer, write the net loss as a positive number. Notice the word "loss" implies a negative number, so a negative loss would be a gain$).$