某产品销售价格，请3位专家进行预测，产品的销售价格期望值是（）元。<br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251102/21638069_0.png"><br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251102/21638069_0_1.png">