-6[6^2(55-6^5)/3]
-6[6^2(55-6^5)/3] =
-6 [ 36 * (55 - 6^5) / 3 ] =
-6 [ 36 * ( 55 - 7776) / 3 ] =
-6 [ 36 * ( -7721) / 3 ] =
-6 [ -277,956 / 3] =
-6 [ - 92652] =
555,912