90.000 - 36 × [ 187 : 17 + 56 : 7 × ( 80 - 1.000 : 50 ) ] : 12 × 31 =
90.000 - 36 × [ 11 + 8 × ( 80 - 20 ) ] : 12 × 31 =
90.000 - 36 × ( 11 + 8 × 60 ) : 12 × 31 =
90.000 - 36 × ( 11 + 480 ) : 12 × 31 =
90.000 - 36 × 491 : 12 × 31 =
90.000 - 17676 : 12 × 31 =
90.000 - 1473 × 31 =
90.000 - 45663 = 44337 => rezultatul obținut