36:6:3×9:6-36:9×6:8=
6:3×9:6-4×6:8=
2×9:6-24:8=
18:6-3=
3-3=0
6:3×9:6-36:9×6:8=
=2x9:6-36:9x6:8=
=18:6-36:9x6:8=
=3-36:9x6:8=
=3-4x6:8=
=3-24:8=
=3-3=
=0
