Решите (1/2+0.4+0.375) * 2/5

Question

Решите
(1/2+0.4+0.375) * 2/5

Answer 1

(0,5+0,4+0,375)*0,4=1,275*0,4=0,51

Answer 2

1/2=0.5
2/5=0.4
0.5+0.4+0.375)*0.4 = 0.51