197*5 216*4 307*3-704: 8 65*8-535: 5 684: 9+(506-102*3) 736: 4+(607-428: 4)

197*5=985
216*4=864
307*3-704:8=833
65*8-535:5=413
684:9+(506-102*3)=276
736:3+(607-428:4)=684

1)197*5=985
2)216*4=864
3)307*3-704:8=921-88=833
4)65*8-535:5=520-107=413
5)684:9+(506-102*3)=76+(506-306)=76+200=276
6)736:4+(607-428:4)=184+(607-107)=184+500=684