109+(291-176)
=697 =396-(28+22) =( =
=396-50 = =
=346 = =
43+189+57 591+482+118 986+1999 216+89+11 473+79-63
645-180-245 1022-478-422 987-(287+135) 478-256-144
672-36+64 36+64-36+64 487-287-139-61 500-257-34-143
2000-368-132 1814-378-422 155+264+36