(23,82+54,58)·(1,202+0,698)-2,1·(3,55-1,89)=?

1) 23,82 +54,58=78,42)1,202+0,698=1,93)3,55-1,89=1,664)78,4*1,9=148,965)2,1*1,66=3,4866)148,96-3,486=145,474

78,4*1,9-2,1*1,66=145,474