(177+219)+ 23 = 177+(219+23)=419
4 • (6 • 25) = (4*6)*23=552
8 • 15 • 4= (8*15)*4=480
434 +114+ 66=(434+114)+66
(177+219)+ 23 = 177+(219+23)=419
4 • (6 • 25) = (4*6)*23=552
8 • 15 • 4= (8*15)*4=480
434 +114+ 66=(434+114)+66