47*632+632*53=63200
47*632=29704
632*53=33496
29704+33496=63200
598*49-597*49=
598*49=29302
597*49=29253
29302-29253=49
754*324-754*314=
754*324
37*46-18*37*72=244296
754*314=236756
244296-236756=7540
37*46-18*37+37*72=
37*46=1702
18*37=666
37*72=2664
1702-666=1036
1036+2664=3700