(6,3*(-9/20)-2,6*(-1/20))*(-4/19)-0,6:(-0,36)=
(63/10*(-9/20)-26/10*(-1/20))*(-4/19)-6/10:(-36/100)=
(63*(-9)/(10*20)-(26*(-1))/(10*20))*(-4/19)-6/10*(-100/36)=
((-567)/200 + 26/200)*(-4/19)-(6*(-100))/(10*36)=
((-567+26)/200)*(-4/19)+600/360=
((-541)*(-4))/(200*19)+5/3=
2164/3800 + 5/3=
541/950 +5/3=
(541*3)/(950*3) + (5*950)/(3*950)=
1623/2850 + 4750/2850=
6373/2850=
2 673/2850 (2 целых 673/2850)