See the decision tree below. You are required to make a decision regarding the development of a new appliance. If you invest in the development of a pressure sensor for the appliance, you have a so$-$so chance of success. The pressure sensor$,$ if successful, would prevent damage $-$and increases the sales price slightly. If your sensor development fails or if you decide not to try developing one exposes you to repair costs under the appliance's warranty.

There is a $60\%$ chance the sensor will be needed $($i$.$e$.$ an $60\%$ chance that repairs will be needed if there is no sensor$).$

Given the information below, what is the expected value of deciding to develop a sensor$?($enter no decimal places, no commas and no dollar sign$)$