计算下面各题,能简算的要简算.12.5×16×0.54.8÷0.16÷0.348.7﹣32.76÷8.40.57×102.
计算:++…++.
计算:(1+)×(1+)×(1+)×…×(1+).
计算:(1﹣)×(1﹣)×…×(1﹣).
计算:+++…+.
计算+++…+.