14.37*7.88—9.37*7.38+1.437*21.2—93.7*0.262 1.437*78.8-93.7*0.738+1.437*21.2-93.7*0.2621.437*( 78.8 + 21.2)---93.7(0.738+0.262)1.437*100---93.7143.7-93.7=50