Select the value of $1 . \overline { 5 } \times 5$.\\ (1) $7 . \overline { 5 }$\\ (2) $7 . \overline { 6 }$\\ (3) $7 . \overline { 7 }$\\ (4) $7 . \overline { 8 }$\\ (5) $7 . \overline { 9 }$