Найдите значение выражения 5 ⋅ 10 − 1 + 7 ⋅ 10 1 + 6 ⋅ 10 − 2 5 ⋅ 10 − 1 + 7 ⋅ 10 1 + 6 ⋅ 10 − 2 .