(3.5*(6.8-1.6+(3.6/0.9)))/84请用简便算法写清楚过程,

Question

(3.5 * (6.8 - 1.6 + (3.6 / 0.9))) / 84 请用简便算法写清楚过程,

Answer 1

=3.5*(6.8-1.6+4)/84
=3.5*9.2/84
=23/60