0.4 + 0.8 + 1.6 + + 25.6 + 51.2 간소화

0.4 + 0.8 + 1.6 + + 25.6 + 51.2 간소화

0.4 + 0.8 + 1.6 + 25.6 + 51.2
= (0.4 + 51.2) × 128 / 2
= 51.6 × 64
= 330.2.4