Найдите значение выражения 4 ⋅ 10 − 3 + 5 ⋅ 10 − 1 + 8 ⋅ 10 − 2 4 ⋅ 10 − 3 + 5 ⋅ 10 − 1 + 8 ⋅ 10 − 2 .