Please calculate the correct solution to this question. State the formulas used and show full calculations used to reach the answer. (Responses with poor formatting or insufficient explanation will be returned to Coursehero). Thank you so much.

Consider an economy described by the open economy version of the IS-LM model. Suppose that the marginal propensities to consume and import are 0.5 and 0.3, respectively, and that the real exchange rate is 0.5. In addition, suppose that the sensitivity of investment to expenditure is 0.15.The government spending multiplier in this economy is (to 2 decimal places)