1. { [ (324+251)÷5+(612+205) ]÷4+217}÷5=
2. {33×[96÷(48÷6-32÷8)+7×9]+467}+32=
3. 971+{875-[35÷7+(63×7-108÷3) ] }÷3=
4. { [29×15+(1.006-117×8) ]÷2+214×19}÷5=
5. 900-0×{846+6×[925-(875÷5+87) ] }

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