please help its for my quiz

Right now is Quarter 2 of 2020. You are developing an aggregate production plan for 2021. Suppose the beginning inventory at the first quarter of 2021 is estimated to be 173 units. The demand for Quarter 1 of 2021 is forecasted to be 1,545 units while the demand for Quarter 2 2021 is forecasted to be 863 units. Overtime production and subcontract will not be available in the first two quarters of 2021. If the regular production in Quarter 1 2021 is 1,895 units, what is the beginning inventory level in Quarter 2 of 2021