7 + [ ( 3 / 2 + 4 / 9 × 9 / 4 ) : 1 / 9 + 11 / 4 ] : 1 / 4 = 108
= 7 + [ ( 3 / 2 + 1 ) : 1 / 9 + 11 / 4 ] : 1 / 4 =
= 7 + [ ( 3 / 2 + 2 / 2 ) : 1 / 9 + 11 / 4 ] : 1 / 4 =
= 7 + ( 5 / 2 : 1 / 9 + 11 / 4 ) : 1 / 4 =
= 7 + ( 5 / 2 × 9 + 11 / 4 ) × 4 / 1 =
= 7 + ( 45 × 2 + 11) / 4 × 4 =
= 7 + 101 =
= 108