1340*3.4+660*8.2+1.34*2300+134*54+0.66*2900
=1.34*3400+1.34*2300+1.34*5400+0.66*8200+0.66*2900
=1.34x(3400+2300+5400)+0.66x(8200+2900)
=1.34x11100+0.66x11100
=2x11100
=22200