2[39/(16-124)+(9+63*7]
2 [ 39 / (16 - 12 4) + (9 + 6 3 * 7)]2 [ 39 / (16 - 48) + (9 + 126)]2 [ 39/-32 + 135]2 [ -39/32 + 4320/32]2 [ 4281/32]8562/32267 18/32 = 267 9/16