=4110−[52−{56−(2×65×6+3×310×3−4×415×4)]
=4110−[52−{56−(1230+930−1660)]
=4110−[52−{56−(12+9−1630]
=4110−[52−{56−(530)}]
=4110−[52−{56−16}]
=4110−[52−{5−16}]
=4110−[52−23]
=4110−[5×32×3−2×23×2]
=4110−[156−46]
=4110−116
=41×310×3−11×56×5
=123−5530
=6830
=3415=2415