(378+189)÷9×5 (360-120)÷3+816÷8 515÷5 +105÷5-120÷2 672÷3-(80+144) (347+509)÷(88÷11)

(378+189):9*5=567:9*5=63*5=315
(360-120):3+816:8=240:3+816:8=80+102=182
515:5+105:5-120:3=103+21+40=84
672:3-(80+144)=224-224=0
(347+509):(88:11)=856:8=107