3.712/ ( 7 - 3.8 ) +1.3 * ( 2.74 + 0.66 )=

3,712/(7-3,8)+1,3*(2,74+0,66) = 3,712/3,2+1,3*3,4 = 1,16+4,42 = 5,58 1) (7-3,8) = 3,2     (2,74+0,66) = 3,4 2)  3,71*3,2 = 1,16      1,3*3,4 = 4,42 3)  1,16+4,42 = 5,58   

3,712:(7-3,8)+1,3*(2,74+0,66)=                      7-3,8=3,2                                                             3,712:3,2=1,16                                                            2,74+0,66=3,4                                                           1,3*3,4=4,42                                                      1,16+4,42=5,58