⌊7×⌊2\lfloor 7 \times\lfloor 2⌊7×⌊2
⌊7×⌊2−1\lfloor 7 \times\lfloor 2-1⌊7×⌊2−1
⌊42\frac{ \lfloor 4}{2}2⌊4
⌊6×⌊2\lfloor 6 \times\lfloor 2⌊6×⌊2