90.0[(0.05/0.125-1/9+0.03\div 0.1/0.5+1/4)\div 1\ 8/15\div 1\ 8/15-1.5\div 3\ 3/4/0.25+3\ 1/4\div 13)-18\ 1/5]
SolveStep-By-Step 90(0.050.125−19+0.030.10.5+1418151815−1.53340.25+31413)−1815=90(0.4−19+0.030.10.5+1418151815−1.53340.25+31413)−1815=90(0.288889+0.030.10.5+1418151815−1.53340.25+31413)−1815=90(0.288889+0.30.5+1418151815−1.53340.25+31413)−1815=90(0.288889+0.6+1418151815−1.53340.25+31413)−1815=90(0.888889+1418151815−1.53340.25+31413)−1815=90(1.13888918151815−1.53340.25+31413)−1815=90(1.13888923151815−1.53340.25+31413)−1815=90(0.7427541815−1.53340.25+31413)−1815=90(0.7427542315−1.53340.25+31413)−1815=90(0.484405−1.53340.25+31413)−1815=90(0.484405−1.51540.25+31413)−1815=90(0.484405−250.25+31413)−1815=90(0.484405−1.6+31413)−1815=−96.103592
Hope I helped!