900-(103*2)+170= 864
103*2=206
900-207=694
694+170= 864
(121*4)+298=580
121*4=282
282+298=580
120+(331*2)=782
331*2= 662
662+120=782
900-(103*2)+170= 864
103*2=206
900-207=694
694+170= 864
(121*4)+298=580
121*4=282
282+298=580
120+(331*2)=782
331*2= 662
662+120=782