5×[6.8-(1.6+3.6÷0.9)]÷84.

5×[6.8-(1.6+3.6÷0.9)]÷84.

5×[6.8-(1.6+3.6÷0.9)]÷84,=5×[6.8-(1.6+4)]÷84,=5×[6.8-5.6]÷84,=5×1.2÷84,=6÷84,=114.