Вычисли удобным способом значение произведения 5×90×2, 3×50×9×2, 2×40×5, 2×6×7×50, 25×7×4×9, 4×8×25×3, 3×2×500×7, 50×6×7×20.
5*90*2=900 3*50*9*2=2700 2*40*5=400 2*6*7*50=4200 25*7*4*9=6300 4*8*25*3=2400 3*2*500*7=21000 50*6*7*20=42000