=528-(53+47) =800-( 138+ 162) =470-(254+46)

=528- 100 =800-300 =470-300

=428 =500 = 170

672-36+64 545- 167- 145 1034+78+320+ 102

=672+64-36 =545- 145- 167 = 1034+78+ 102+320

=736-36 =400- 167 = 1034+( 180+320)

=700 =233 =534

325-276-24 25+75-25+75 84×63+84×37

=325-(276+24) =25-25+75+75 =84(63+37)

=325-300 =75+75 =84* 100

=25 = 150 =8400

127+ 123+ 184+240 8×( 125+25) 487- 187- 139-6 1

= 127+ 123+240+ 184 =8× 125+8×25 =487-( 139+6 1+ 187)

=490- 184 = 1000+200 =487-387

=306 = 1200 = 100

24×8+24×93-24 300- 123-75-77 98× 13

=24(8+93- 1) =300-( 123+77+75) =( 100-2)× 13

=24× 100 =300-275 = 1300-26

=2400 =25 = 1274

Only a boring person like me can do your problem.